As health returns so to does emotional, spiritual, and mental well-being. When gloomy thoughts invade, or the past, or the future, be with NOW feeling my body, noticing the surroundings even in the darkness.
Sticking with now, usually having to repeat the mantra as thoughts drift, brings the moment into me… living it instead of wasting it. It is like meditating while moving.
Your choice, be gloomy or joyful, and when healthy the later is so much easier to choose.