A goal is a destination, something you want to achieve or become. A habit is the vehicle that can get you there.
Human beings are predominantly creatures of habit. Most of what we do, we do without thinking. By learning to harness the power of habit, we can accomplish more than we ever thought possible.
When we attempt to accomplish a goal based on willpower alone, the results aren't always what we want. Willpower is a limited resource, and eventually the reservoir runs dry. But once you establish a habit, there's no willpower needed. The behavior becomes automatic.
Think of a kayak or raft on a river. Going with the current is easy, but going against it can be nearly impossible! You can spend time strengthening your muscles, facing the challenge with grit and determination, or you can just go with the current.
Right now you have a number of habits, some helpful and some harmful. Changing a habit can be quite difficult in the beginning. There may be a lot of resistance to overcome. But once a habit is established, we no longer move against the current -- we flow with it.
There are many ways to establish a habit. One is to work with an accountability partner, someone you report your progress to until the behavior becomes habitual. Another is to establish a reward or consequence for success or failure.
One of my favorite habit-formation strategies is to connect my new habit to something I'm already doing. For example, if I am in the habit of eating breakfast every day, I can establish a new habit to write for 10 minutes every morning after breakfast.
Rather than just dreaming, set a goal and start forming habits that will help you achieve it.