When we are not doing anything we are thinking but it also often happens when we are doing something still we think something else. A man should keep his thinking positive in every direction as much as possible. Every time a thought keeps coming into the human mind, but it is up to us how we turn those thoughts in a positive direction. Many people are lost in the past. They also waste their present time remembering the bad things that happened to them. This happens to many people. If you remain in your past, you will never be able to be happy. Therefore, it is better that you pay more attention to the present. Do not think again about what has happened to you in the past. Negative thoughts keep coming into his mind, like tomorrow he will get a job, where will he deposit the installment of insurance, how to build a house, how to teach children, etc. It is a type of disorder. You should not worry in vain. Think as positive as you think.