This finding is well proven and has been repeated in hundreds studies across a broad range of areas. For example, implementation intentions have been found to increase the odds that people will start exercising, begin recycling, stick with studying, and even stop smoking.

Recently, I've come across a few research studies that (just maybe) will make these difficult lifestyle changes a little bit easier. As you'll see, however, the approach to mastering many areas of life is somewhat counterintuitive.

The most important thing to note is that there is some “tipping point” at which new habits become more or less automatic. The time it takes to build a habit depends on many factors including how difficult the habit is, what your environment is like, your genetics, and more.

But here's the thing: automaticity only occurs as the result of lots of repetition and practice. The more reps you put in, the more automatic a behavior becomes.

The problem is, even if we are committed to working hard on our goals, our natural tendency is to revert back to our old habits at some point. Making a permanent lifestyle change is really difficult.

When you begin practicing a new habit it requires a lot of conscious effort to remember to do it. After awhile, however, the pattern of behavior becomes easier. Eventually, your new habit becomes a normal routine and the process is more or less mindless and automatic.

However (and this is crucial to understand) follow-up research has discovered implementation intentions only work when you focus on one thing at a time. In fact, researchers found that people who tried to accomplish multiple goals were less committed and less likely to succeed than those who focused on a single goal.

Researchers have a fancy term for this process called “automaticity.” Automaticity is the ability to perform a behavior without thinking about each step, which allows the pattern to become automatic and habitual.

That said, the study cited above found the average habit takes about 66 days to become automatic. (Don't put too much stock in that number. The range in the study was very wide and the only reasonable conclusion you should make is that it will take months for new habits to become sticky.)