Number one warning sign of a user

One axiom of human nature that we can all benefit from is a behavior that's typically a warning sign of users and even sociopaths: a person telling you about how generous they are.

Those who help others, do favors and provide a shoulder to cry on and who aren't doing it just for attention don't typically spend much time telling others about it because their motivation should be the joy of helping others, not attention. Yes, it's okay to tell people sometimes when you do nice things, but the majority of the time, if you hear someone bragging about what nice things they've done, they didn't do it just to be helpful. Even if, (or maybe especially if) they tell you in the same breath that they did it but it was no big deal/they don't need any credit.

Bottom line: most people who tell you they're generous and kind only tell you so because they know you won't have any other reason to think so.