It sounds like things are hard for you. Even though it's natural to want to be nicer to people who are nice to you, it's important to be kind and respectful to everyone in a professional setting. Your actions could be seen as favoritism or discrimination, which could get you in trouble at work.

It might help to think about why you feel like you have to pick favorites and work on treating everyone the same. Also, try to build good relationships with all of your coworkers, not just the ones you like best. Good luck!