Be willing to try different exercises. Your local YMCA probably offers many different kinds of exercise classes. Consider dancing as a social activity and exercise. Consider using your lunch or break periods at work for walking or see how you can integrate exercise into your routine. Seek professional help for depression or mental distress.
Depression is an illness that can limit a person's enjoyment of life.
Just as your regular routine may involve visits to a doctor, your mental health routine may also involve regular treatment or regular counseling and support groups. Contact you local mental health department or agency. Quit smoking and the misuse of alcohol or drugs. Probably nothing is going to complicate your life than an addiction to tobacco or drugs. Seek help to end any dependence you have.