"I even get sick of people constantly asking me for the time"
My college room mate would always respond with "time to do what" or something along that when asked. Of course he also carried a round tuit in case someone said they would do something when they get a round tuit so he could hand it to them.
I don'tstop and help people out as much as I used to, used to be I would stop all the time but I also got tired of people being unprepraed and almost acting like I owed them too.