You have to think about it. When you act in a negative way, you receive negative things, negative feelings. But when you take action in a positive way, you feel positive. 

So, If I am a negative person, regardless of whether the problem is big or small, everything converges towards a negative result. 

Of course, complications and problems are part of our life, never forget. We know that. But if you act in a positive way, everything leads to positive results, so everything converges towards a positive feeling.