I've tried to start a number of new habits over the last few months, some of them have stuck, some of them haven't. Here's the ones that didn't stick.

1. Reading 2 books a month - Not really an unrealistic habit but perhaps should have been changed to 'read at least two books a month'. I've scrapped this in favour of just having a list of books that I can work through when I can. Some books take longer than others, so why timeframe it? It detracts from the enjoyment that a book brings. Try this instead - Just make sure you have a couple of fiction books beside your bed and keep reading them. When you finish one, replace it.
2. Logging something I learned everyday - I did keep a separate Journalong file for this but some days you just haven't learned anything significantly new. Instead I just log these as they happen. No sense in making a daily habit of it.
3. Mind mapping - I really wanted to start mind mapping again but the truth is I see little benefit in it now. I think mind mapping has its uses but it's just not on my radar now of things I want to keep doing. Yes I realise that as a past mind mapping blogger this is probably considered blasphemy but opinions change.

The thing is when you set out to start a new habit, it doesn't always work. If you really want it to work, you'll set aside the time to do it and keep on doing it. It will eventually stick.

If it doesn't, then just let it go. When a habit doesn't stick, it's not defeat. It's just your way of saying, I don't need this.