Doing anything that takes extra effort to do is the selfless thing you can do for anyone. Things that require being on the verge of your own happiness yet not caring about anything but someone’s well-being is considered selfless act.    Selfless things that you can do for anyone which will make you feel amazing about yourself such as:  - Forgive others  - Give up your seat for others - Help someone lifting a heavy object - Allow someone to merge in the traffic