Nico, nothings easy. What you just posted I believe may have nothing to do with you being drunk, that is still an instance of your thought. If you have dreams of greatness, don't. If you have doubts about the chances you are taking at playing the guitar, take some time off. It will always cross our mind.
Its a matter of choice.
If you take the red pill, down you go to the rabbit hole and into naked reality. Your efforts will not be for naught if in your heart you have fulfilled the modest and purest intent of every musician, to play music.
If you want to play safe, take the blue pill and do whatever else you want to do. Never knowing where your risks might have led you. Ignorance is bliss.
And here comes priorities.
Looking back at the day I decided to play the guitar ten years ago, I am still proud to have made the choice. No regrets. All imo.