A common beginner's problem is the inability to pull the trigger. This comes from either a lack of confidence or a lack of preparedness. You must accept that your comfort level in making trades will improve with time, experience and practice.
Go back to the basics. Study the charts, study the setups, and write out your orders or game plan the next day. Do more research until you have truly made that pattern or system your own.
You can make use of our Bank Nifty Option tip for tomorrow and you will never face any such difficulty in life.