How you respond to issues, problems, situations, and adversity says a lot.
Know that your actions have equal reactions. What you do and say will invoke a reaction.
If you act in a certain way expect others to match that with a reaction.
Ex: if you treat a friend like crap expect a reaction. They may stop talking to you, they may respond by treating you like crap.
But your actions will cause a reaction. Known and unknown. Physically, verbally, mentally, or otherwise. It will happen.