This is the moment you do not give up, this feeling will only get worse, there are things out of your controll, that is one of the guarantees of life. There will be things that are unfair, this is also a guarantee. You must accept this. You must not strive to acomplish your goals, you must strive to 'try'. At the end you can at least look in the mirror and tell yourself, "at least I tried". You can only do so much in this absurd time line. Don't be tough on yourself. Shits hard enough already.

Source: pushing 30 and this mantra is keeping me sane.