If your instinct is that someone is not good in your life, then you should follow that instinct.
You get pickier when you're older. You are busy, there's less free time, and you have to spend energy in a relationship.
Everyone wants to start the New Year's with a healthier attitude. A good friendship can boost your physical health and mental health, but a bad friendship can cause all sorts of emotional problems, resulting in anxiousness, depression and headaches.
It's a time to make a fresh start and make changes in your life.