Your inner strength is invulnerable to fear.
Don't regret the past or fear the future. Both bring misery through self-doubt.
To be is not a choice, but the way you feel about it certainly is.
Every spiritual tradition has this idea of death and resurrection. It's not unique to Christianity.
But the real secret to lifelong good health is actually the opposite: Let your body take care of you.
When the mind is silent and quiet, then inner energies wake up and work miracles on your behalf without any conscious effort on your part.