CuriousCatholic,
I've asked this before so pardon my question again, particularly if you've already answered it, but do you have a priest that you can talk to? When going through the trials that you discuss here, it can be very helpful to have a priest to help you and I would even venture to say that it may be crucial.
Please seek a good priest's counsel and tell him everything that you have told us. Go to confession and also seek his counsel both inside and outside of the confessional. Keep in close contact with him. Ask him how often he recommends that you go to confession and then follow his counsel.
I would like to say that you should exist peacefully with your family and show them that you are learning and growing in charity, but I'm sure that a good priest can help you to figure out how to do that and even what to say to your family. You may be able to influence your family much more by your example than your words.
Since you are living with your family and don't have a job, it seems that the obvious path to take with them is to coexist peacefully. Apologies may be the best path and if so I'm sure your priest can help you to know how to word such apologies.
Please continue to pray your daily Rosary and your 3 Hail Marys EVERY morning and EVERY night for the grace to avoid all sin and for perseverance. Your Blessed Mother will never abandon you. NEVER go to bed without at least praying your 3 Hail Marys, no matter what!
You have many friends here who will be praying for you!
God bless and keep you!
In the Hearts of Jesus and Mary,
ora pro me