Don't guess tomorrow - Price is a subset of EVENT/NEWS + , so we are not certain about the News/Events that flows into markets.
So keep guessing about tomorrow disturbs our sleep and peace of mind.
If you are trading in F&O, World's renowned statistician Steidlmayer mentioned that you should be an intraday player. And Warren Buffet the celebrated and highly successful investor talks about investing for a long period based on the fundamentals and wait on it.
Only the above mentioned two options will keep your sleep and peace of mind intact.
Decide yourself, what's your piece of cake here.