There is a little known secret that when discovered, can make a BIG impact within your life. Some call it the 'domino' effect, but I like to call it the 'Overflow' effect.
Basically, we all have a 'master key' that can be used to unlock many different areas of our lives. If we consider health (which I will use in this example), there are what I call 'the big three'.
Training, Sleep, Nutrition.
One of these holds the power to the other two.
For me, when I discpline myself to get at least 7 hours of sleep per night, I am able to attack the next day knowing I am on track. If I don't, I suffer.
The key is to discover which of these locks will be opened by your master key.
Maybe it's working out hard 5 times per week. Maybe it's having your diet on point.
Once you find it, monitor it, stick to it and don't let anything get in your way.
The discipline you learn from just this one task, will overflow into the other two.
Then, just find your master key to the other doors in your inner house (wealth, family, learning etc) and you will find yourself living a complete and fulfilling life.