[johnny35]

This is not a first world problem it is the universal human problem of finding meaning in life. This question is the fuel that keeps religions running. There are myriad supposed answers and even more practitioners that would like you as a client and will promise the answers you seek. Use the motivation, time, and resources you have today to search for your own answers. Your mind and body should be as sharp as possible to allow you to take a path of strength rather than weakness, and to put it more simply, to be capable of resisting being taken advantage of. You'd be prudent to dial in your sleep, nutrition, and physical activity while you're in this phase. This won't last forever and you will end up with beliefs about the meaning (or meaninglessness) of life, so my advice is to put your thumb on the scale - by ensuring your body and mind are in good condition - and make it more likely you land on a personally empowered outlook.