Those good deeds you did for others, are as worth it for you as they are for them.
To be happy, don't look for appreciation from others. Let the happiness come from within.
Don't be scared of a problem, be scared if you don't have a solution.
To feel big, to feel successful, you don't have to achieve big some particular day. That will happen. For now, focus on making small differences every single day.
Be the reason for your own smile Do what you have always wanted to do. Try meditating. Learn some yoga online. Try some new online courses. Read some new ebook. Take up some new subjects to learn. Watch the movie you have always wanted to watch. Listen to the songs that make you happy and …