For me they're more of a 'fun' thing to know, but can also give a sense of ways to feel more comfortable or at home with myself. Like extra 'advice' that can come in handy.
True Rest has come in handy as I can get easily wound up and in need to burn off some extra energy or frustration.
For True Rest mine are: listening; music; practicing vividry (heightened sensation of a moment)
So, basically I can get all three accomplished by really tuning in to some of my favorite or more stimulating music, and/or playing the piano. And it is very relaxing/refreshing, and makes me feel more calm and unburdened. Listening to music and playing the piano are also what I've always 'gone for' in the past when I've been stressed out, so it really makes a lot of sense.