Stopping a SIP in a downturn is the most expensive mistake in Indian retail investing, because it sells the cheapest units you will ever buy. Chasing last year's best fund is the second: by the time a fund tops the table, its style is usually about to go out of favour.
Others: holding ten funds that own the same companies; confusing a low NAV with a cheap fund; choosing IDCW for the "income" and paying tax on your own money; keeping an emergency fund in equity; and checking the app every day until a red number makes you act.
Almost every mistake comes from acting on a feeling with money that had a plan. The plan was made when you were calm. Trust that version of yourself.
The plan was made when you were calm. Let that version of you decide.