Jon Jones recently wrote Happiness is a CHOICE, a short post on the idea that happiness isn’t just something that’s “out there” or something you only get after accomplishing something.
A key idea from the article is that being upset about something doesn’t have to affect your mood. It isn’t productive to focus on negative things. It makes it very hard to be motivated or think positively when you have thoughts about your bad day burning mental cycles. They don’t even have to dominate your thoughts; if you think about it at all, it means you aren’t focusing on whatever you should be focusing on.
Some people think that once they accomplish something, then they will be happy. I think you can be happy now, in the moment. Why wait?