Instead of accepting what others think is relaxing, find out what’s best for you.
A service that offers you a huge selection of sounds to listen to and see how they relax you. From children playing in the distance, to heavy machinery working. Just listen and choose the ones that make you relax, then use those when you feel a bit stressed. You can alway find more sounds similar to the ones you already know work or find out entirely new ones.
You get a lot of advice on what you should do, prioritize, target, wish for, etc. that is only part of a good plan.
Make a list of things you should not worry about, and look at it at least every morning and night. It will help you be more effective, focused and even relaxed and less stressful.