I also don’t believe it should be tied to a religion. Mindfulness can be practiced by any individual from any faith. It really comes down to emptying our minds of any story, illusion, conditioning etc and being fully invested in each moment, as if you are experiencing it for the first time. You bring all your creativity, all your energy, all your attention here. This removes suffering that we may be carrying from the past (regrets, shame, disempowering beliefs) and future suffering (anxiety about tomorrow, being burdened by expectations, fear of uncertainty etc). So this practice can be experienced by every person without them having to tie it to a religion or an ideology.