Wow 25, I remember when I was that age….yesterday. No worries. Hello I’m a 26 yr young still at home while I’m applying for higher level university studies.

You certainly have a lot on your mind and over think many things. Remember thinking is a wonderful process and we all as humans need it. Thinking is just like eating, until we do too much of it, then it hurts. After reading your message, I did not seem to find anything about employment/job. If you already have one, congratulations, you’re already on the correct path.
FIRST THINGS FIRST: STOP and be grateful that you have a loving and caring family that has allowed you to reside in their home for the past 25 years and if need be when you’re 30 or 45. (I know by the time you reach 30 you’ll be well independent).
Looking down at your list of problems, it’s quite clear that many of them begin with the common phrases; “I won’t be able”, “I’ll never be able to”, etc. When one begins any statement with these phases, guess what, then it will never happen.
One of you’re biggest goals in life is to one day own your own house, which is a wonderful investment. But remember that having a mortgage is certainly a BIG investment. There is no shame or stigma when renting an apartment, condo, or room in a house and putting aside a little for a home. You are free of the responsibility and maintenance/up-keeping and your sole responsibility is paying the rent/utilities (depending on living situations/circumstances). For many young people, it’s a dream for them to own their own house. Many go out and purchase property once they get that full time job after college. Some are aware of what they signed up for, while others do not and are left with the financial errors/mistakes.
Home ownership is one of your big goals. How do we achieve a big goal? By taking the small necessary steps. Each small step helps us and brings us closer to a big goal. Moving away from family members can be difficult, but with the endless amount of technology available today, it really can feel like a small world. If you are independent, then the social life will “replace” the heartache of missing your family. Once you take that first step towards moving out and working/living on your own, then things will begin to progress and the over thinking will begin to subside as you are occupying your time and energy towards owning a house.
Take Care