I'll be here or there for you

I'm often talking about "real" friends and being a good friend.

I want you all to know that I'll always be here for anyone. ANYONE who needs me. I know what it's like to feel alone or misunderstood. I've reached breaking points too. Sat depressed, wondering which direction to go from here.

I also know how just one person can change someone's life. Or at least your perception on a situation.
I'm here for anyone who needs me. Because I believe that all bad things will end, compassion exists, and friendship can be real.

We all need someone sometimes. I will be your someone anytime.
A helping hand. An open ear. A shoulder to lean on. Any other useful idioms...
I'll be here <or there> for you.