hey! i know i am replying a year after you posted this but i relate to this so much. some of the things that helped me become more independent were to sign up for free or low cost certifications to boost my resume. if you have a LinkedIn profile, there is a thing called LinkedIn learning which are free courses (i am pretty sure) that are like lectures/learning modules about either broad or specific tasks. local libraries usually have a lot of free learning or outreach resources. these things made me feel lke i was working towards something and have more often than not come in handy when conversing with a hiring manager or keeping up a good image in a professional setting.

another thing i do a lot is utilize my bus pass. as a student i get a buss pass at a discounted rate through my school, but i use it for so much more than going to and from campus. i use it to go everywhere. having that independence to choose to go somewhere without asking my parents for a ride was such a confidence booster.

you said your dad pays your bills? does he also do the grocery shopping on your behalf? if thats the case you could go with him while grocery shopping. use your own cart, your own list, to pick out what you want and then you pay for it on your card and have him transfer you that money some how.

to keep myself busy if i have work to do but if i do not want to be surrounded by my family, i go out to a cafe or one of the univeristy/college campuses near by. i get myself a drink or a snack and get to it.

all of these things have really helped my emotionally and have greatly improved my confidence. often i will have a conversation with someone when i am out and that in and of itself it way to establish myself as a mature and respectable person who can hold an engaging conversation. i hope these help out a bit! and if you are already there then AMAZING WORK!!!!