When I feel upset about how bad life can be what is the best way to feel better?

It pretty much depends on what's going on.

Can you add more information?

Consider how good you have it now. Because no matter how bad you think it can get... it can always get far worse than that.

Consider life barely above the starvation level for prisoners in a North Korean Gulag wher youare frequently beaten and tortured? Makes whatever problems you have seem minor in comparison, doesn't it. Its all about perspective.

Don't compare yourself to the lucky privledged few born into luxury, money and privledge, but look at those less fortunate than you. And no matter where your are, they aren't hard to find.

Your question is pretty vague.

Everyone has bad days, everyone feels bad about how their life is going at times. Sh*t happens, as the saying goes.

How I make myself feel better, may not work for you. Everyone is different, and every problem is different.

A bit more info may help us give you better ideas, but in the long run, you're you, and how you deal with things is unique to you, so really, you have to figure out how to put a smile on your face when things aren't as great as they could be.

I like spending a day at the spa, sitting in the hot tub, smoking a big cigar (ok, yes one of my bad habits) doing a sauna, luffa and massage. But my friend, likes to do a 10 mile bike ride. You need to find your happy place.

Do something nice for someone else, but anonymously.

Do something nice for someone else, but anonymously.

That may help you, but how do you know it will help the OP?