I RECEIVE MANY queries about taxes. Most of the questions people send are pretty much the same: They want my advice on how to lose less to the IRS.
Most of the answers I send back are pretty much the same: I advise them to plan ahead and stay on top of tax-law changes, especially whether they will be hurt or helped by the Republicans’ proposals for the most sweeping revisions in more than 30 years.

I RECENTLY LEARNED a new expression, TL;DR, which stands for “too long; didn’t read.” Twitter users and bloggers use it when they want to summarize an idea for readers who are short on time. It’s the modern equivalent of saying, “Here’s the executive summary.”
Coincidentally, this week, two people separately asked me what I see as the most important principles in personal finance. In other words, they wanted the TL;DR version, without too much commentary.

I BOUGHT MY HOUSE in Silicon Valley by launching a Kickstarter campaign. Together, the team blew past our target and disrupted an entire industry—all while driving for Lyft (not Uber) and Airbnb-ing our couches, of course.
Just kidding.
First, what is a house in Silicon Valley? In the lauded land of garages-turned-unicorns, owning a house means any number of things: A wall, if one’s lucky. A floor. Perhaps a couch.
Not so for the wise who live elsewhere—like my Phoenix-based high school best friend.

IF THERE’S ONE NUMBER that drives our financial lives, it’s our fixed living costs. We’re talking here about regularly recurring expenses that are pretty much unavoidable, such as mortgage or rent, car payments, property taxes, utilities, insurance premiums and groceries.
Why are fixed living costs so important? There are five reasons:
1. The lower our fixed living costs, the easier it is to save. I believe many Americans would love to save more, but simply can’t,

IN NOVEMBER 2015, I got a notice from Amazon advising me that its security had been breached by some clever hacker and that my password may have been compromised. I was locked out of my account and instructed to set a new password.
In typical mindless fashion, I immediately set out to do just that. But then my inner contrarian stepped up and shouted some questions. I love this guy, even though most everyone around me thinks he’s a truculent moron.

HAVING RECENTLY LOST several people, I was in a bit of a daze. Grief stopped me from doing some of the things that brought me incredible joy, like downhill skiing and whitewater kayaking.
Enter Sheila.
Being the Swede I am, I fell in love with Sheila—my gently used Volvo AWD V60 sedan. My attraction to Volvos included family nostalgia, safety and longevity. The dealer was a friend of my aunt, so I was able to negotiate a very reasonable price,

TO IMPROVE OUR behavior, we first need to realize we’re on the wrong path and then figure out the right way forward. Often, this isn’t especially difficult. If we have no savings, obviously we need to sock away some money. If we’re overweight, we should cut back on the calories. If we’re out of shape, we need to hit the gym.
Instead, the real problem is getting ourselves to act.

The contemplative side of our brain is fully aware we ought to eat and spend less,

MOST MONEY conversations, especially with financial advisors, orbit around the concept of increasing dollars.
When is it best to buy stocks? Answer: in a down economy. Reallocate money from bonds.
When is it best to buy bonds? Answer: in a thriving economy. Reallocate money from stocks.
When is it best to save? The answer invariably seems to be: always.
On the one hand, I embrace this concept. A chronic self-tither,

MANY OF MY CLIENTS make donations to their favorite philanthropies in the final months of each year. With lower tax rates in the offing, this could be a good year to make such gifts—especially for those who have appreciated property to donate.
Many clients reflexively write checks, as that’s the easiest way to qualify their gifts for charitable deductions. But before they reach for their checkbooks, donors who want to make major gifts—and also lose less to the IRS—will do themselves a favor if they first familiarize themselves with other often-overlooked ways to contribute.

I JUST INVESTED $1,000 on behalf of a grandchild who may never be born. This reflected two of my enduring preoccupations: figuring out the best way to use my limited wealth for my family’s benefit—and getting an early start, with an eye to squeezing maximum advantage from investment compounding.
To those ends, when I visited my daughter in Philadelphia last weekend, I helped her open a 529 college savings plan. Hannah humored her father by committing to invest $25 automatically every month.

A FRIEND RECENTLY asked me the interest rate on my credit card. I admitted I had no idea. I pay off the balance in full every month and therefore don’t know, or care about, the interest rate.
I’m a minority in this regard. Only 35% of us pay off our credit card balance each month. We’re dismissed as “deadbeats” by profit-hungry credit card companies, perhaps with some justification: We reap the benefits of credit card rewards programs designed to lure the other 65% of the population into using their cards on a regular basis—and then foolishly carrying a balance.

STOCK BUYBACKS ARE here to stay. The Securities and Exchange Commission opened the door in 1982, when it ruled that companies could repurchase their own stock without triggering accusations of share price manipulation. Ever since, more and more companies have taken advantage. Indeed, in recent years, U.S. corporations have spent more money buying back their own shares than paying out dividends.
Good news? I see both plusses and minuses. Here are the plusses:

Once you figure in buybacks,

THE BOGLEHEADS HAD their annual conference this week in the Philadelphia area, where Vanguard Group’s headquarters is located. Devotees of Vanguard’s 88-year-old founder John C. Bogle, the Bogleheads usually meet online at what’s probably the world’s best investment forum.
The star of their annual meeting was, of course, Jack himself. His latest book, an extensive revision of The Little Book of Common Sense Investing, just came out. What was on Jack’s mind?

IF YOUR INVESTMENTS climb in value, hold the champagne—until you figure out whether it’s a onetime gain or a repeatable performance.
Suppose your foreign stocks post gains because the dollar weakens. Or your bonds climb because interest rates fall. Or stocks rise because price-earnings ratios head higher. Or corporate earnings increase because profit margins expand. Or stocks jump because the corporate tax rate or the capital-gains tax rate is cut.
Sound familiar? All of these things have either happened over the long haul or helped drive share prices higher this year. 

FOR THE FIRST TIME in my life, I’ve hired a housecleaner. It’s absolutely worth it—but embarrassing to admit, at least at first.
I’ve always been a neat freak, demanding clean, organized and tasteful living quarters, so I’ve spent a good portion of my life cleaning and organizing. A lot. I have even declined an invitation to go boating and hiking because I was color-coding my books.
Lame, I know.
After purchasing our home, I realized something had to give.