There are plenty of reasons 
for having negative thoughts. 

Let us recollect the effects of the thoughts. 

Peculiarly, 
it's difficult to have positive  thoughts. 

But, 
everybody used to have negative  thoughts, 
at least occasionally! 

Positive thoughts has to be  cultivated, 
otherwise it will not come and grow. 

But negative thoughts are like weeds, 
which will suddenly come and grow. 

Both occasional and frequent negative  thoughts 
will have the same effects. 

It'll disturb our usual tempo, performance,
enthusiasm, faith, life etc., etc., 

Positive thoughts will certainly  become true, 
on one day. 

Negative thoughts will NOT 
become true. 

So, it's not necessary to worry about 
negative thoughts! 

Worrying for negative thoughts, 
will not help to stop, 
to have negative thoughts. 

Worrying for negative thoughts, 
will only increase to have more negative  thoughts. 

So, let it come and go! 

Let us not restrict the negative thoughts! 

Let us cultivate the positive thoughts! 

Let us have good yield from the positive thoughts! 

Let us have good yield from our own life!