i think there are two good methods for this although i definitely struggle with this  1 understand that you actually dont need to put too much time into things to get to being a novice intermediate and when you visualise being good at something this is typically what youre thinking of  you can put in 3 months of daily practice into something then take a 6 month break doing something else and after a few days weeks of getting back into it youll find you are actually even better than if youd just started the second period when you took a break  2 you can refine the shit out of your goals and realistically if youre talking about mastery youll be satisfied with doing only one or two specialised disciplines  similarly the more advanced you get at more skills the more youll realise that you have no interest in mastering the significant majority of these disciplines  for instance i like chess  i will play study for hours a day for months and then ill just get bored of it and remember that i only like doing it as a mental exercise and i dont actually have any interest in becoming a really strong player  ill stop playing for months and then when i come back within a week ill be as i ever was  similarly i play trumpet piano and guitar  i sometimes get stressed with how much i want to get good at them but then i remember that i actually dont care too much  i want to get to expert level of trumpet and be able to improvise like a semi-pro one day but for guitar and piano im only interested in being able to improvise chord progressions primarily for production  production is the key discipline i want to focus on and although im dealing with similar problems when it comes to actually doing it remembering thats the key discipline and my guitar piano skills will develop to my ideal goals just by producing is far more cleansing and productive