You cannot solve all the worldly problems. Why? Because you don’t have that much time to solve each and every problem. So, solving only one can be better. And it must be genuine and you must have an interest in solving it. There are tons of problems as an individual I come across them every single day and you may too. But, simply most of them don’t interest us, it may be for several reasons like lack of interest in solving it or lack of skills. Lack of skills is not a problem, because skills can always be developed, but developing an interest is not an easy part.