Changing our habitual ways of doing thing takes time. But in a a society that wants instant gratification, this is a tough concept to accept. We don't like to wait. We don't have the time to be patient. We have a lot to do, and we expect quick results.
But effecting lasting change takes time. Do not have expectations of achieving a lot quickly in your practice. In fact, do not have any expectations at all. Start from where you are, and learn gradually how to put the teachings into practice by starting with the things that are easier to change.
As you begin to improve in little ways, you will gain the confidence and experience to know how to change in more meaningful ways. This changing and improving of yourself will take time. Understanding this, give yourself the time you need.