One of the best things about the Miracle Morning is the Facebook community who regularly post about their experiences with the system and also recommend apps and books that they have found useful. One such recommendation was Mini-Habits by Stephen Guise.
I'm about halfway through this book and I think it has broken the deadlock of my exercise resistance. I've ditched the 30 day challenge app and now set myself the target of doing a plank for 30 seconds. Guise started his whole mini-habit idea through getting himself to do 1 press-up (I'd be overjoyed if I could do one press-up!). The result for the last couple of days is that I am doing my full exercise routine every morning at a manageable level. Now that I don't think I have to do plank for 3 minutes and 50 squats my subconscious is not fighting against doing any exercise at all. A 30 second plank and 10 squats is more beneficial everyday than a half hour routine I have to force myself to do so only manage once or twice a week when I'm feeling 'motivated'.
I'm sticking with just the exercise mini habit for now but I'm sure that there will be potential for adding in more mini-habits to my routine. Guise also recommends a mini-habit of reading two pages a day but that is one habit I don't have any trouble with!
Another blog I like which focuses on habits is The Happiness Project by Gretchen Rubin. I haven't read her book yet but it is on my list.
I also like the work of James Clear. He commits to publishing a blog post every Monday and Thursday, a routine which has seen his blog become successful because it is reliable.