I would say it's important to keep yourself involved in aviation and don't give up. Have you considered flight instructing part time while keeping your main job? Or flying skydivers? Banner towing?
I know people in their 20s who took years to get that first job but they stuck through it and eventually landed the job. If you want it bad enough, you'll get it. A friend of mine in his 40s just got an interview to fly regional jet aircraft in Europe.
All the best.