yes the thoughts seem to never end...but grounding to the present helps a lot. remind yourself that your 24 now and everything happened a long time ago. that you older and notice things that make you feel and look older, hands are bigger, feet are bigger, you can drive, you have your own ......
it will never be a simple walk in the park to stop the thoughts but you can feel calm and its nit the end of your life ...stay strong !!