The worst part of that sort of vague dissatisfaction is that it causes you to to live your life at arms length, both afraid to let go and afraid to truly embrace. And, unfortunately, because all of life involves some disappointment, there's no formula to follow to know when you should be dissatisfied and when you should decide that what you've got is a good thing.

The real trick to all this is simply to realize that you aren't perfect and will make bad judgements. Forgive yourself. When you look back and realize that you threw away something wonderful, it's because you weren't ready yet. When you look back and realize that you hung on to something terrible for way too long, it's because you hadn't learned any better yet.

Make the choices that feel right at the time, and stand by them as the only choice you could have made at the time. If, three months later, you realize you're worse off, well, at least you know never to do that again. You've grown. You've learned.

As long as you spend your entire life learning from your experiences, you're living life to its fullest.