I like this method where you don’t go for SIP but plan, research and be ready with your wish list and enough cash… and then wait for market wide correction (which usually happens 2-3 times a year) … Never ever rush to buy… markets provide enough opportunities & award patience
On exit policy… you may need more research as I observed that your exit to Kajaria didn’t yield any result but it has given good returns after your exit 
I know that you can’t gain in each & every investment / trade but we learn from historical events & try to improve