I can not walk due to defect in legs. which type study i choose for better future life

I suppose you must go for office and paper work related jobs. They offer good salary with hours of siting work. Try Banking Sector. That's most suitable. But you can also try psychology related jobs like career counselling , Image Counselling etc.

BY SEEING YOUR QUESTION I AM BECOMING LITTLE BUT SENTIMENTAL. YOU HAVE LOST THE LEGS NOT THE MIND AS WELL SOUL. DESIRE. SO YOU ARE JUST EQUAL TO US . YOU CAN DO ANY COURSE AS PER YOUR DESIRE BY TAKING CARE OF BEST SUITABLE IS OFFICE WORK NOT THE FIELD WORK WHILE SELECTING THE JOB.I WISH FOR ALL SUCC