It's hard to advise without sounding cliche. It sounds a lot like you just aren't sure what makes you happy. You don't have to answer to anyone but yourself when it comes to your happiness[1], so first off, don't think that there is anything you're supposed to be: you don't have to be an office worker, a millionaire, a philanthropist, an athlete, or anything you don't want. You have no obligation to be happy, or sad, or excited, you should just learn to be content with yourself, and if you're not, to find out what it is that you'd like different. Not because someone else says you should, or you think you should because of something you read, but something you think you really like. It's the same concept behind people trying to lose weight or get into an exercise regime - if you're not doing it for yourself, you are going to burn out.

Take some time and just figure out what it is that makes you feel content, what's close to your ideal self. When you picture yourself in your mind's eye, what do you like about you? What don't you like, and wish were better?

Everyone has little things they wish they could change, but just make sure you're making the changes for you, not to impress others. Be happy for yourself first more than anything.

If the prospect of 8-5 doesn't appeal to you, figure out what would. A lot of us don't really know what we want to do aside from real general vague thoughts. That's the status quo, I think - driven people who have a specific goal and focus are pretty uncommon, and many are directed by their peers.

Give it time - you're only 29, it's not like you're one foot in the grave. I'm 30 and I've been winging it since I was 18 and went to college. By chance I found out I understood technology really well, and without having taken a single technology course, I've learn tons about all levels of infrastructure just by showing employers I could learn. This took me across the US, from a meager support role to a managerial role at a University, and then from there to China and to Russia with my partner. I still don't know what I want to do, but I do enjoy where I am and who I'm with. I'm happy with my health (mostly), happy with what my partner and I get to do for fun (ballet, opera, music, dancing, biking), and I'm learning every day. None of this would have happened if many years ago, I hadn't taken a good look at my life and realized I liked nothing about it. I was out of shape, in a miserable relationship that was leading to marriage, and was about to take office work because I thought I had to - I took a long time to focus just on getting myself to a nice spot, finding what I wanted, and then moving outward towards bigger pictures.

I'm not saying pack up and move to Russia; but what I am saying is figure out what it is you want for yourself. Be a little selfish. (Note: this doesn't mean stop caring about others, it just means that you take some time to really focus on yourself, getting yourself to a state where you are happy) The world is a pretty wonderful place with a lot of cool people, and it's always changing. Find something that works for you, cause I'm sure it's out there.

[1] = though, please make sure your happiness isn't straight up hurting others...