Many people trade, switching cycles over and over,

Sometimes looking at 5 minutes, sometimes at daily charts,
In the end, the direction gets confused, the mindset collapses, and money is lost.
Actually, choosing a cycle is very simple, remember three matches:
Match your time, match your personality, match your strategy.
1. Choose by time
Full-time monitoring, plenty of time: do 5-minute / 15-minute intraday short-term trading, quick in and out, no overnight holding.
Commuters, limited time: look at 1-hour / 4-hour swings, check 2–3 times a day, don’t need to watch constantly.
No time to monitor, long-term investing: look at daily / weekly trends, hold for days to weeks, follow the trend.
2. Choose by personality
Impulsive, can't hold positions: choose small cycles (1/5 minutes), take profits and run, don’t hesitate.
Patient, can withstand fluctuations: choose larger cycles (over 1 hour), catch big trends, earn significant profits.
Beginners, unstable mindset: start with 1-hour / daily charts, small cycles have more noise and are easy to be shaken out.
3. Choose by strategy (core: see big, do small)
Intraday short-term:
Large cycle (30 minutes) sets the direction
Operational cycle (5 minutes) finds entry points
Swing trading:
Large cycle (daily) determines trend
Operational cycle (1 hour) finds buy points
Trend trading:
Hold positions on daily / weekly charts, ignore small fluctuations
Summary
There is no best cycle, only the cycle that suits you best.
Beginners should not chase small cycles, first understand the big cycle trend,
then use small cycles to find entry points. If the direction is correct, profits and losses will naturally follow.