Negative thinkers are natural a part of our lives, without them, then life is incomplete, the job on you is to know how to deal with them, know what to believe and what not to, God created the world and made it perfect, but humans beings aren't perfect, everything in this life has it opposite and it's OK cus they all play their different roles in shaping the world.
You have to sort things out for you to able pick those right people to circle around you. Different people have different impact to your life. Stay focused with those who have good reflection in your life.
Forget those who are not doing any help and just bringing bad impression, they've done nothing but just to bring bad vibes to you, they are not helping out instead they're only bringing negative effects.