Compartment your worry.
Set aside a certain amount of time to ponder over a problem and map out an
effective plan of attack and your options.
Once this is done, have the mental fortitude not to come back to the problem and go over it again and again.
The human mind is a strange creature – things we want to forget keep coming back
and those things we want to remember are not there when we want them.
But the mind is similar to a muscle and the more you flex it the stronger it will become.
Make it your servent.
Feed it only the best nutrition and information.
It will serve you well and perform magic if you believe in it.