How do you teach a heart not to hurt?

How do you teach a heart not to hurt, not to feel the pain, sometimes I just wish I know the answer to this question, so when I’m drowning in sorrow and pain I’ll know what to do....
Sometime my heart and mind is growing tired of all the pain and hurt, but I can’t, I can’t just give up because I don’t want the people that I love and care for get hurt too....I don’t want them to suffer the pain that I’m going through.
I just hope that one day they’ll realise how much I love them and will keep on loving them till the end, and how hard it was not to show the hurt that slowly eating me up inside.