My feeling is that you're addicted to something else - and I would suggest that "something else" is much better for you than the alternative.
Is this it? Yes it is! Well... yes and no! You might be able to conquer the world - wouldn't that be great? :-) Your challenge isn't in what you achieve, it's in what you get satisfaction from. When you conquer the world, when you make your first million, when you do x, y or z... - that "high" will eventually leave you void, much like the void you've already defined, both within yourself and within your family. Your challenge will be finding peace and pleasure in the normal moments of life. Do you relate to or understand what I'm saying?
I wish you the best! Not in your achievements, not in your work, not in your studies - but in your pursuit of happiness for the rest of the moments that sit in the vast space between your low points and your high points.