First try to be grateful and positive about where you are. If you have a job, then you are more blessed than millions of people. Millions. If you eat everyday, then you are more blessed than billions. So be extremely grateful that you have work.
But being grateful doesn't have to be satisfied.
I think that you can be grateful but still want more. As long as you don't ever complain about what you already have, It is good and healthy to pursue more
Make goals for yourself.
When you make a goal, be sure to think of a creative way to make you actually remember it each day, or week. You can set an alarm on your phone every week, or you could tape a piece of paper to your bedroom door. My only suggestion with these types of reminders is to be sure that you change it up often. If you get too used to the alarm or sign on your door, then you probably wont pay much attention to it.
After you can remember your goal, you have to do something about it. It doesn't have to be big steps, but at the end of the day, look back and think: "Did I do anything at all today to get me closer toward the goal?" If the answer is no, then you try harder the next day. If the answer is yes, then YOU WILL reach your goal either sooner or later. Go for it everyday!