There is some part of your brain that controls how good you are at controlling your own behavior. Some people are bad at it (alcoholics, drug addicts), most peo

There is some part of your brain that controls how good you are at controlling your own behavior. Some people are bad at it (alcoholics, drug addicts), most people are average, and some people are exceptionally good at it (Elon Musk perhaps?). To do what you suggest is materially possible but requires exceptionally strong self-control. Odds are your self-control isn't that strong because if it were, you'd be preoccupied with other things. It's like people asking about studying higher math on their own. Ofc it's possible but for most people the self-control required isn't there.