How sad it is to see those you care about crying
Do what you can to make them smile
and change their pain into happiness
but never, never, never, never ever
add your pain [more pain] to their sadness...
The last part is the tricky one; be careful. Don't play God. No matter how good you think you are at what you do, or how much you may be willing to bleed to make your magic work, leave the miracles to God. Just be there for them: your friends, your loved ones, those you care about, those you have chosen to help. That one special person in your life. Don't try to change or mold, or play miracles with them. Just be there, eventually they will find their own way. Their own happiness. For now, just be there for them.