detachment from goals

I'm a lay follower because I am too old to become a monastic and I have familial commitments, but I see the general futility in my goals in life. In specific my career goals. I was training for years to be a musician and had been derailed due to injury and health issues midway through my Ph.D. I have since recovered though it has taken a very long time and I cannot go back to finish my Ph.D since the time constraint the university had expired. Thus making it even harder to succeed, and more improbable than before. Though my biggest problem is that I somehow attached my self worth to success, and I dont know how to detach. I know intellectually that success in a career of any kind is ultimately bound with suffering especially when viewd with the knowledge that life will expire. I cannot give up all together though since living a lay life requires working. I would still like to do something but I also need to be detached enough not to get wrapped up into the suffering and clinging of desires. What are some possible practices to do this?