How the HELL do i become happy and STAY that why?

Ugh im usually such a happy person but now i just cant stay happy my life is good except for the fact that my mother is no longer in my life and shes a total ***** and likes to start stuff with me but i moved in with my dad so thats all good.. Ive been here for awhile and i was happy but lately i just cant be happy! I feel like i always need to be or talk to someone at all times and when i dont i just sit there and then call a bunch of friends so im not lonely. Im not a lonely person like i have my dad and stepmom but i dont even know anymore. I feel a little lost but i dont know why, i made a list on things i need to do and on how to stay happy, i just cant seem to stay happy HELP PLEASE im tired of this.