Firstly get the concept of any chapter you are doing clear.
then start with the easiest problems, which most of the people skip.
Once you start getting the correct answers to the problems, gradually increase the difficulty level. this will help you to gain confidence and also build some interest.
higher level difficult problems can solved with friends as challenges. That sense of competition will help you push your capabilities. 
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A shift from theoretical mathematics to applied mathematics would go a long way, especially at the beginning stages of math learning.  Understanding how geometry, calculus, and physics apply to our every day lives should draw in the most ardently opposed and oppressedAlways prefer problems on "Compound Interest" instead of "Simple Interest".