If you truly want to break through your addiction to mediocrity, your recovery must be spiritual. It doesn't necessarily involve going to church. That is good, but without a personal relationship with God, churchgoing is empty. Focus on what your soul hungers and thirsts for: to relate to God.
Talk to the Shepherd, Don't lie counting sheep; Talk to the Shepherd if you can't find sleep. Tell Him your burdens and pour out your soul;He'll alway hear you when you're in His fold. Talk to the Shepherd if sleep cannot come; Don't lie counting sheep, CHRIST is Balm. He'll calm all your fears and give you sweet peace, So talk to the Shepherd; He'll calm you to sleep.