A strategy is a set of perceptions and behaviours that occur in a particular sequence to reliably achieve a specific result. Any reliable result is generated by a strategy - even if it is a bad habit or a response you don't find useful. The way to change a result is to alter at least one element in the strategy so that the strategy can no longer function to get that result.
To learn how your strategies work, pick one thing that you can do reliably, whether it is reliably good or reliably less than useful. Ask yourself what must be true in yourself and in your environment to trigger this strategy. Then walk through, step by step, asking "what else must be true" until you have a complete process.
If it's a process that gets a result you like, you can now use it more often. If it's a process that leads reliably to a result that you don't like, you can change just one element to create new choices.