I should be a hold trader

I found I am not a good short term trader or trend trader

I found
1) If iI trade and change hands within a day, 40$ chance I win, 60% chances I lose.
2) If I trade and change hands less than 3 days, most likely I lose big.
3) If I can hold stock or position (when no margin call is issued), 100% I win big in 3-12 months.