I'm interested in the answer to this question as it's giving me massive grief (along with regret of not having done X Y and Z already -- I could've had a PhD by

I'm interested in the answer to this question as it's giving me massive grief (along with regret of not having done X Y and Z already -- I could've had a PhD by now!...) and I'm seeing a psychologist about it. I want to do a Masters in Computer Science and study computer vision (whatever uni I can actually do that at). But also, I want to give acting a shot! And I have three or four ideas for a startup or kickstarter! But I really wanna try living overseas! But at the same time I pretty much need to work full time to pay rent. How do I pick something to do when even one thing plus work seems exhausting?