Positive thinking often helps while coping with stress in life. However there can be occasions when it may not work for you, and you may get overwhelmed with negative thoughts. At that crossroad, you should make a turn, even a U-turn if necessary, and confront your negative thoughts fearlessly. You should now combat those negative thoughts one by one, mercilessly - by using scientific and analytical reasonings, and demanding substantiating evidence from negative thoughts. Once you start defeating those negative thoughts as irrational or unfounded or baseless, you'll find yourself getting close to the realm of positivity. Combating negativity ruthlessly - that's a new tool in your tool box along with your favorite hammer of positive thinking! Cheers!
Deodatta V. Shenai-Khatkhate