Mistake: Strategy Hopping
A losing month makes another system look appealing. Switching feels like action. It usually resets the learning process and hides the real problem.
Strategy hopping occurs when a trader abandons a method after a short period of poor results, in favor of a new one. Because every method has losing stretches, hopping ensures you always experience the worst part of each, and never reach the point where the edge, if there is one, becomes visible.
It also prevents skill building. Execution improves with repetition of the same process. Each new system requires learning new rules, so your skill never compounds.
And it feeds the search for a perfect method, which does not exist. Strategies differ in profile, but all involve losses, drawdowns, and uncertainty.
A sensible approach is to define evaluation criteria in advance. For example, a strategy gets at least 100 trades, with rule-following above 90 percent, before judgment. Within that period, changes are limited to fixing execution errors.
At the end, decide using data: expectancy, drawdown, and fit with your life. If it fails, document why, and design the next attempt with that knowledge.
Avoid switching in response to social media enthusiasm or a single bad week.
Keep a record of strategies tested, with their results, which gives you a research history.
Practical step: write down the number of strategies you have tried in the last year and how many trades you gave each.
Mistake: Strategy Hopping
Mistake: Strategy Hopping
It’s Fairman 
Re: Mistake: Strategy Hopping
Writing down how many trades you gave each strategy last year is a humbling list. Mine had a few that got fewer than 30 trades before I moved on. With a 45 percent win rate, a run of six or seven losers in 30 trades is completely normal, so I was judging those systems on noise. What helped was keeping a single page per strategy with the start date, the rules as they were at the start, and a trade counter. If I wanted to switch, I had to write down the trade count and the actual numbers first. Seeing 22 trades written there made it obvious I hadn't tested anything yet, I'd just had a bad fortnight.
It’s Fairman 
Re: Mistake: Strategy Hopping
Fixing execution errors within the test period is fine, changing the rules isn't. That one distinction keeps the evaluation honest. Moving your stop because you misread the rule, entering late because you weren't at the screen, forgetting the news filter, those are execution problems and fixing them is the point. Changing the stop from 15 to 25 pips or adding a new filter halfway through is a new strategy, and the trade count should start again from zero. Keep a short list of rule changes with dates in the strategy file. If that list grows every week, you're hopping inside the same strategy name.
It’s Fairman 