For the next week, monitor your language for signs that you are not living in the present. The key phrases to listen for: if only, could have, should have, would have, could be, should be, must be, will be, going to, and assuming that. One phrase catches it all: If [I did or experienced something in the past] then [this will happen in the future]. When you hear yourself using these phrases, substitute words in the present tense.

Frederic & Mary Ann Brussat in Spiritual Rx: Prescriptions for Living a Meaningful Life