The Happiness Equation: How to Have Big Goals and Still Be Happy
The easiest way to be happy is to keep your expectations low. But what if you still want big goals? Here's how to have both.
I think I've figured out the key to life.

Happiness = Reality − Expectations.
We all know this. The easiest way to be happy is to keep expectations as low as possible. But that never sat well with me. Does that mean I shouldn't have goals or ambitions?
I figured out how to do both: get as much as possible out of life and still be happy. Here's how.
First, define what's enough. Let that number — not your goals — set your expectations.
Second, set goals. Goals inform your actions, which shape your reality.
The trick is keeping these two things separate. You can have a goal to push yourself and a baseline of "enough" that stays fixed. The mistake is letting your goals creep up what enough means to you.
Running example.
My goal was to break 2 hours in the half marathon. I use the goal inform my training. Race day: 2:04.
But my enough? Breaking my previous PR of 2:08. I beat that by 4 minutes.
Did I hit sub-2? No.
Am I happy? Yes.
Business example.
Last quarter my revenue goal was €4k/mo. I earned €1,851/mo.
Still happy, because my enough was €1,500/month. I beat that by €351.
The trap to avoid: Don't set goals that force you to raise what enough means.
If I decided to move to NYC, €1,500/month no longer cuts it. I need at least €4,500 just to get by, versus €1,800 in Berlin. My enough would have to move up, and so would my expectations.
This is also why salary raises usually don't make people happier. If you let a bigger paycheck lead to a bigger lifestyle, your "enough" rises with it, and the net effect on happiness is zero.
Goals are for growth. Enough is for peace. Keep them separate.