Having strong self-sense means that you will doubt yourself less and second-guessing chances are minimal. For a start, this will lower the effects of thinking too much. But ideally, self-sense can enable you to make a decision before your overthinking starts.
Learn to be aware
You must learn when you are overthinking. Once you find that you have started feeling anxious or stressed go back and analyze the entire situation. Being able to catch your overthinking early enough enables you to prevent it from happening frequently.
Get opinions from someone else
If you are used to handling overthinking alone, consider asking someone else about it and hear what they have to say. Someone can suggest a solution that might be better than what you have been doing on your own.
Most people start overthinking when they are feeling scared. They think of many things that are likely to go wrong. Instead of that, you should start picturing the things that can go well and keep those positive thoughts in your head.
Put an end to being a perfectionist
Not all things turn out how they were planned. This is something that everybody should get used to. Avoid thinking that everything you do should be perfect. Finding satisfaction in making progress is much better than finding satisfaction in everything turning out perfect.
When you allow yourself to think for long when making a decision, you can end up overthinking. You will look at the situation from so many angles and this will leave you feeling stressed. Setting a time limit for the time you spend in thinking before you come up with a decision will prevent you from overthinking. You only need to adjust the time as per the size of the decision you need to make.
That is how you can ease your anxiety and ensure that you remain motivated. It will, in turn, prevent you from overthinking, which has no sense.