It is an easy concept to grasp, practice makes difficult tasks easier. Practice also reinforces patterns, so much so that with enough practice, patterns become automatic - no conscious awareness is required to perform a task at that point. So it is true with awareness, intention and acceptance. If you find yourself in a situation that you do not like, you did not get there by intending it happen once or twice. You practiced that negative intention daily, probably until it became automatic. You didn't know until now that you were doing this, but it happened all the same. The practice of being aware of the intentions flowing through your mind, creating your good intentions, and accepting those changes into your life makes this process automatic as well. You just need to start.
Just as you may make a New Year's resolution - intending to start the year right - without regular practice it may fall flat. Just as taking a new route to the market requires concentration the first time or two its traveled, so does this new process. As soon as you revert to the old route, you start to forget the new route. Without practice, our skills fade.
Starting now, make a small amount of time each day to practice this new skill. It doesn't have to be the same time each day, though that helps reinforce the pattern. Also it doesn't have to be long; fifteen minutes a day will suffice. During this 15 minute period do the following.
The above steps will turn the task of intending your positive future into an automatic process. Soon, you will start to do this without having to remember or remind yourself.
One last thing to watch for throughout the day is negative thoughts. As you practice breath counting daily, your awareness during the day will increase and you will start to notice the unintended thoughts more often. When you do notice thoughts that you do not like, replaced that thought with another. An easy way to do this is to think about something completely different. For example, if you find yourself thinking "...I'll never have enough courage to ask for..." think, "...when is the next time I need to practice my intentions?"