How do you express your gratitude?

Small but “Thank you” is a very great word. Sure you might not be able to repay back all the good things a person may have done for you in life, So thank you! yes, say it from heart not with just your lips. Personally, if I can repay back why not? But if not, all I do is say thank you and keep you in my prayers. That good deed you have done, may it make you flourish now and in heaven. Am not ashamed to say thank you even I make it life I will always remember that good thing someone has done for me.