Honestly I am an spm holder, but been working as programmer few years ago, I have been changing a few company in last 6 years, now I am 28. My current salary is RM3k, it seems like I unable to get better job than my existing one thus I am asking for suggestion.

I have been learning programming since I am a kid like standard 2, so I do have a very solid programming basic and knowledge. But I do NOT have good academic result cause I was quit halfway studying at college(personal reason). My main problem is that I unable to join any good company due to their requirements(degree/master in ...), cant even getting a chance for interview, I know if I able to get a degree I can get a better job, but currently I have to keep on working for my life, and most company I joined keep on telling me that I do not have qualification thus they unable to increase my salary even my performance surplus their expectation, thats why I keep looking for better oppotunity and chance. A fresh master holder joined my company has the starting salary of RM2.5k, I took 4 years to get that, I feel so down.

I hope I can have a stable income of at least 4k-5k by the age of 35. I would like to listen to any suggestion how can  I improve my career. Any advice are welcome.