Why can't we be positive?

ABOUT THE BOOK WHY CAN'T WE BE POSITVE? LET'S DISCARD NEGATIVITY BE POSITVE It is very unique book specially written for those who are very negative shaky and week in their character and who always intend to live a negative life.. It is said that negative thinking is purely our own matter. Though it has got something to do with our external circumstances. But there are certainly some positive factors within us that keep us happy and there is something negative within us also which keep us unhappy. Happy living through positive and good thoughts, is nothing more than that of living a normal life free from undue pressures, problems and tensions. We must therefore forget our worries and negativities and enjoy our lives happily