Why don't we let Job, Daniel, Christ ...John the Baptist and many of the Saints we killed answer for us. Did they yield? Did their Faith hold in adversity?
Spirituality is an inner state, one does not practice devotionals to be well, but to love God and do His Will, whatever it may be.
Happiness comes from within, and relies on inner strength; on spiritual values. Of course there is a 'temporary' thing called happiness which is affected by both physical and emotional pain. For some, the emotional pain is stronger and for others, the physical pain. It is a very individual thing. Much Love.