You've got to try to blot out relationships with other people, I think, to form true friendships with your family member, but you can profit from these other relationships if you've learned certain skills there.

Don't let your love of family members overshadow that which you nurture, foster, and embellish in the theories of true familial friendship.

In other words, talk over the good times, "apologize" for the bad times, do fun things together, and be as generous as you possibly can be with them.
Maintain your sense of humor as far as any phobias, neuroses, or hangups the family members might have that otherwise would get on your nerves.
Be considerate, punctual, try to be thoughtful, and maintain contact with them through thick and thin.
There probably is much more to this than the above-think of ideas yourself-especially little things mean a lot ones.