There are many good and worthwhile things to do and be involved in. Perhaps you may not know about some, or you were not interested in it. A change of lifestyle requires that we find meaning in our lives by doing good works, Isaiah 58:10. But first you have to identify it, many join the peace Corp and things like that if you can afford it. Other charitable organizations can also benefit offering help to those in need. Seeking a worthwhile career is also a good place to start like becoming doctors or lawyers. Even if you are not good at school, finding work that is worthwhile is still important to overall well-being, Colossians 3:23-24. Being a waitress or a cook even a janitor is worthwhile, nothing is wrong with these jobs.
