For me it's the situation that I'm in But I do practice all of them every day as much as possible because some might work for a person and some might not I also play a game of solitaire on my phone if the grounding doesn't work for me or the situation is bad for me. My adice is to practice each one until a situation comes up then try one technique first if that doesn't work then try one of the others until that person finds what works for them. I try to remember to practice daily until I have the ways of grounding down I myself use the one of a sentence or the first sentence in a song I do that one at night in my head as I don't get to sleep right away at night but I would say practice each one everyday until the right one way works for a person then they can use that to make the grounding personal for them which means thinking of something they are comfortable with and use that in their grounding. Glad I could help. Glinda