Right track in life

Recently I had an interesting discussion on when is one on the right track in life. The answer of the person stuck with me and since then leads many of my decisions:

'When you spend time doing things that give you energy rather then deplete energy.'

Sure, there are hard times and crunch time, but do you feel great to have done it? Are you in an environment where you feel energized? Do you feel comfortable and inspired at work? Do you learn what you want to learn? Do you have people around you that support you and encourage you? ...

Obviously, everyone is different and gets energy from different things. What gives you energy and do you spend enough time doing it?