Deserve it?

What do we deserve? Webster defines deserve as "to be worthy, fit, or suitable for some reward." Wow!
When we pray, we often ask for all sorts of things.. such as, 'please help us get enough money to buy a boat..' well that might be extreme but you get the point. 'please do this and please do that, please give us health and safety and more..' Sometimes, we don't even say 'please'.
I think we need to start praying by saying, "God, You know I don't deserve your love and attention, as you know my heart and you know my secret thoughts".. Would it change your prayers?
God gives us so much and He does hear our selfish prayers, but often He gives us mercy instead of what we deserve.