It's great you're in tune with your feelings, and realize how much more full your life will be when this isn't holding you back.

It looks from your history like you're under 18 and presumably living with/dependent on your parents or family.

Make sure you think through all the potential consequences and have a plan to deal with what could be a very strong emotional response from them.

You've articulated great reasons to come out, but there are also valid reasons to stay in the closet until you can come out safely.

Bad things happen, and parents have a rights that give them wide discretion to make decisions until you turn 18. Even liberal/progressive parents can react differently than expected. Some kids are sent off, against their will, to horrible places that attempt to change them from gay to straight.

If you proceed, please make sure you have people who are ready to support you before you communicate to your family.

Most importantly, don't let anyone else tell you when or how you should do it. Only you have to live with the outcome.