I keep hearing from people these, some of my most hated words, "you know how grateful I am."

Do I? 

This comment, to me, is a slap in the face. Gratitude is something you show, not something you say. It's something you do, not something you "assume" other people are going to read into. Has someone done something wonderful, generous, hospitable, kind, or sympathetic? TELL them you are thankful. SHOW them you are thankful. Shower those people with the positive things you have to offer- they've earned it. And yeah, you're gonna have to do that for as long as you hope to receive generosity from those people.

This bullshit about people "knowing" how grateful you are has got to stop! That's called taking them for granted, not showing them your thanks.

Having recently experienced too many "you know how grateful I ams" I have decided that, because I can't change anyone but myself, that I need to pull back on the generosity. If I'm apparently "in the know" about so much stuff, than you won't mind me knowing that you're taking me for granted and then changing my behavior.