I thank you for all you have done to me?

"Life is a lot easier when you accept that you aren't the only one living it."— Patrick Allan
I thank you for all you have done to me. You rock! You are a wonderful, and a typically helpful person. You have been (…) through everything I have been through for four years now, without you they would have no purpose. You have been so hugely central in my life; willing to sharing my great concerns, for which I am very indebted to you for making impossible possible.
Although you have had a very limited amount of your free time, you have still been providing an invaluable service to me just as you are doing now. I am grateful for you leadership and extraordinary civic-mindedness.
I hope you continue your unwavering support, so let's not think of this as a parting, but rather as a new beginning (…). I would also like it very much if you could come up and say hello! Again and again, thank you so very much—and I owe you one.

Best wishes,

Hello;

I wonder if the text above is free of grammatical mistakes. Also I would be happy If you could help make some improvements.