It is just as important to take care of yourself as it is to be there for others. It is not selfish or a sign of weakness. Neglecting your own emotional (or physical) needs will break you down and you won't be able to help anyone.
A comic that isn't recognized all that often is Blue Ear he's a man with a hearing aid and he actually was created because a boy refused to wear his hearing aids so his mother tried to contact marvel because his reason for not wearing them was 'no super hero wore hearing aids' so his mother tried and tried to get the boy to put them on by talking about Hawkeye but that didn't help. So marvel worked with another company to create blue ear.