How to remain positive...

I started a gofundme page to ask for help for the first time in my life...but not to be a debbie downer, my life has been for as long as I can remember a struggle...nothing seems to ever go right and I fight amd I try and I have not given up but if I am blessed with something positive 10 horrible things come crashing down and take away that one good thing...so this is my last attempt amd last fight I have left...how can I remain positive that change will come and keep hope when nothing but negative has consumed my entire life? I wont go I to details but just trust me there is no exaggeration here...I'm at the end of my road, please help me find a way to remain positive...especially if this does not work