Everyone has bad days but that does not mean that you can take it out on others. Be kind to everyone, you don’t know what they are going through. You never know exactly what goes on when you are not around someone; you don’t know their struggle.
Next time you consider being rude or unkind to someone, sit back and think of what he/she could possibly going through. It’s important to be nice because you never know when you could be struggling and need someone to cut you a break.