It is hard to achieve this, but not impossible. You will be amazed that the solution to all your stress and problems is a small walk away from where you are sitting.
Take a five minute break from what you are doing right now and head outside by a park or by a tree where there is shade. Look around and rethink yourself by forgetting everything you just left behind and allow all the goodness of nature to cure all the bad. Nature is priceless and we should cherish it.