Forgive - most people misunderstand the reason for forgiving them for their hateful behavior towards you, it never means you want restoration - it only means they are not worth your energy, power or peace of mind.
You are somebody's reason to smile. - please remember this! You -are- my reason to smile. Even at 3 am when you may feel grumpy and harassed, getting ready for a new day. She just wags, more than smiles!
Just because you aren't given the credit and haven't been recognised for your work doesn't mean you have to give up or stop. You don't always need credit, other people do not always have to know what you are capable of doing as long as you do.