You are having trouble in math what should you do?

Look for someone who doesn't have troubles or who has at least less trouble than you and ask them to help you understand parts that you have problems with. With concrete questions you can go to your teacher to ask for help, otherwise your family and friends are always a good point to start looking for help. Finally you could get private lessons. There are surely offers for that around where you live.

If you often wonder things like "How on earth should I think of that way to solve this?", simply do lots of exercising. The more experience you have in working with those numbers the easier it will be for you to think of ways to solve problems.