I think the key word here is expect. Our expectation is what resentments are made of.
When you are in need go find someone in greater need and help them and then your mind will be off of your own dispare. Let your HP be your best friend that is what your HP is there for....
You will find that nobody can be there all the time unless you have a simease twin and I suppose even siamease twins have to detach from eachother sometimes.
It also means that even your best friend will have to go it a lone with out you sometimes. Were you there for your best friend so he would be there for you or were you there for him because you wanted to be?