I don't like those catch phrases either. I prefer the Golden Rule.
I certainly don't credit myself for my good fortune any more than I would credit myself for bad fortune.
From childhood I was taught to thank God every day for the food on the table, my family watching over me, any talents I possess, and any opportunities I am given. Today I am thankful for a healthy family, a thriving business, and wonderful friends.
I don't count kindnesses I get and I don't count generosities I give, and I don't mete out good deeds like some Paypal transaction, but every time people treat each other well, the world is a better place. So let them say whatever phrase suits them if they behave well.