the one with the running

i hope by running, i can forget my troubles, or perhaps just get things off my mind at the moment. uncertainties arise again and i dunno why should i be having such thoughts now. running makes me tired, makes me sleepy, makes me forget. can i just stop harbouring such unwanted thoughts? my heart bleeds and hurt alot whenever i think of that. i can't talk to anyone regarding this so please dun ask me what is it. thanks.