As they say, do not sell yourself short. If you do not think you cannot study further, you wouldn't have made such plans of studying further. And again, age is just a number. Most entrance examinations do not have an upper age limit for the same reason. Your quest to knowledge should not have an age limit. So if you are studying your M.Com (//M.Com) right now, assuming it would complete next year, take up B.Ed. You should never have all your eggs in one basket. Your opportunities for employment increase with better educational qualification. So approaching 30s should not be a reason why you shouldn't study. People at the age of 40s and 50s are enrolling themselves for various courses across the globe and so you shouldn't fall behind. And it is no wrong to want to study. So go ahead.Good luck:)