>What can I do?
1. Fix your diet: Ween of sugars (everyone starts addicted – must go <5% cold turkey for 21 days to break the habit); avoid preservatives (body cannot process them and have down-chain effects on metabolic health); never eat additive 541 (aluminum based and related to Alzheimer's); drink only bottle water; eat yogurt (the gut biome is second-most important 'organ' behind the brain); ensure to get fully body sunlight from time to time, and/or a regular vitamin D intake (health-wise, vit-D pretty dictates everything); fibre, fbire, fibre, and especially with any sweets (mitigates insulin release from livers, so that energy used rather than stored as fat);
2. Exercise: Not for bulk necessarily (each to their own); but, to get the brain juices pumping enough to start thinking of ways out of the rut. Interval exercise is king once you can get to that stage, as it's like an exercise injection that takes on minutes; swimming is the best, single physical activity you can do.
3. Place no stock in frens or, especially, GF's, as they almost always impede potential and growth with their own goals. If you get 'em, make sure they compliment and, ideally, challenge you for your betterment. If not, nothing of value is lost, and you can even use it as negative reinforcement motivation.
4. Remember that 99% of reality is perception – if people perceive someone to be something, the majority of the time they will have confidence in them. Most of every field in the world is filled with people winging it or in paygrades way higher than they actually warrant (even more so in this D.E.I-ified era). That, the competition is numerically vast; but, it is competitively shallow as puddle of piss.
5. Learn to unlearn all the trash data they have invariably filled your noggin with. Intelligence is about learning only what is useful and can be recalled when needed; or else the pursuit for knowledge gets lost.
>To study history means to search for and discover the forces that are the causes of those results which appear before our eyes as historical events. The art of reading and studying consists in remembering the essentials and forgetting what is inessential. ~ Adolf Hitler (Mein Kampf)
https://youtu.be/RM7lw0Ovzq0