A host of studies suggest that consistently ‘practising gratitude’ can have positive impacts on mental and even physical wellbeing.
‘Practising gratitude’ is incredibly simple. It can be done verbally or written (or incorporated into meditation), and is a simple task of noting a number of things you are grateful for that day, week etc. It could be a person, an experience, an emotion, a pet, your morning coffee - nobody tells you what to be grateful for. The primary prompt though, is to note these things without caveats - if you’re journalling, don’t write ‘I’m grateful for X, except when….’ and go on to list a bunch of negative caveats or qualifiers. State what you’re grateful for in simple straightforward terms.
One best practice of habit formation is to tack this on to something you already habitually do. For me, when practising gratitude I do it on my morning dog walk with my wife and simply say three things I’m grateful for yesterday.
https://ggsc.berkeley.edu/images/uploads/GGSC-JTF_White_Paper-Gratitude-FINAL.pdf