Like others I have really enjoyed this thread - thanks everyone!
I think, like most of us, I have a lifetime of good and bad habits. The long ingrained good habits I don’t even think about but of course they have really added to my life. Things like cleaning as I go, sleep routine, no alcohol at home unless having friends over and journaling feel so easy now as I have done them for so long.
Changing the bad habits has been so hard but finally over the last 12 months I think I have made some credible progress. I shifted my focus from trying to achieve big changes and improvements, instead I now focus on one thing at a time. It’s taking a long time but I’m getting there.
My sweet tooth and sugar cravings are my absolute downfall. In August 2019 I focused on one thing only, kicking the 1litre per day Coca Cola habit. It was soooo hard, 11 months and 14 days later I have not had even one sip. The withdrawn headaches had to be experienced to be believed 
I then moved onto chocolate (multiple bars per day) and for one month it was the sole focus. Now, I have a chocolate treat once a month. The cravings are still there but I am managing to work through them.
I then moved on to white bread, again a month long focus. Have not had a bite since. And then it was the turn of crisps, another month long focus. Have had crisps only once since then.
And then it was biscuits, haven’t had one since. You get the idea....
I know some of you reading this will wonder why I didn’t do all together - it was simply too much. I would have failed as I had many times before.
From 1st August, my focus is on water. Small first step will be 1 Litre per day everyday for the month.
Journaling is the back bone of habit improvement for me as well as helping with general life organisation - from my experience it’s absolutely worth trying.
I would also recommend Miracle Mornings and Atomic Habits as reading material. I found both very helpful.
Thanks for all the great ideas, it’s got me thinking about September focus already.