Here’s a great exercise that I’ve found really helpful in determining my bliss:
1) Think of the what you want right at this moment. Considering that you do not know what you ultimately want yet, it’s probably something simple like that girl from work, that new BMW, or the ability to travel around the world.
2) Now fast forward to when you have all of that. Immerse yourself in that moment and chose what (more) you will want or need. In this moment, you already have all that you currently want, so what will your new desires be?
3) Repeat, repeat, repeat. Eventually you will come to the point where you have every earthly possession and the world is at your fingertips. So what then? You can’t just stay stagnant because you have everything, that would be extremely boring. What would you do with your life if you could do anything?
Once you figure out what that bliss is, why not skip to doing it now? As you have just imagined in the previously described process, even when you have everything, you will still be wanting something more; it's human nature. We get bored with what we previously thought would be the ultimate source of happiness. This is something that just needs to be accepted.
Following your bliss is the ONLY thing that is going to keep you in a constant state of…well…bliss. Not early retirement. Not the vacation condo in Tahiti. Nothing besides your passion, your calling, your bliss. And the best part of your bliss is that it’s something that you will be amazing at.