From the sound of it, you are being overwhelmed with the expectations that your parents have for you... They are pushing you in a direction that they consider to be safe and secure, but you are not sure if it's right for you. You are striving for autonomy, but you are feeling trapped by what other's feel is "best" for you. This is normal for people in their 20's. It's actually a good thing, as this existential crisis is not happening at a time when you are years into an established career with a mortgage to pay and a family to feed... I had the same experience after high school, and ended up taking a few years off to travel and work various jobs before going back to school (and now I'm finishing a Ph.D., as I found a type of work that I really care about)...

If you asked your dad if he enjoys his job, would he say that he wakes up every day excited to get to work, or does he see it as a job that pays well and keeps a roof over your head? If he says the latter, than he is likely to be viewing your future in the same light, and his advice should be viewed as biased information (even though it comes from a place of caring and knowledge of life's sometimes harsh realities). Remember that you are your own person, and be careful to always carefully consider your sources of information about the world (all humans are prone to give poor advice, and this is especially true for family members, where emotions frequently cloud rationality).

My advice would be to first walk into your university counseling center and ask to talk to a certified career counselor. You want to get a better picture of the path that you are on and the different possible career paths that would not conflict with your long-term goals and values.

Taking time off school for personal reasons is common, and is sometimes critical. Don't worry about finances if you have student loans, as income-based repayment plans exist to peg payments as a small fraction of your income.

I don't know the dynamics in your family, but if there is a way that you can express how you feel overwhelmed with the pressure that they are putting on you, this could help signal that they need to give you some space on this. Let them know that you are feeling lost in life, and that you are taking steps to deal with it before you burn out and give up on your career goals or on life in general. If you want to really emphasize your assertion, you could do something like insist on paying rent to your parents, signalling to them that you are deadly serious about living your own life and that boundaries with your family are not going to remain as enmeshed as they have been (google "enmeshment" and see how it applies to your family dynamic).

In times of high anxiety, people tend to respond with fighting, flying (running away/avoiding), or freezing up. In this case, putting energy into fighting for what you want is the best path to take. You are your own person, and you can only prove this to yourself by taking actions every day to get yourself into a life that you feel is worth waking up to every day. It takes a little fighting, but people respect fighters, and you will find that people will come alongside you to support you along the way. Good luck!