Looks like since the profit / loss cumulative is below the regression line, that it is in an "undervalued" zone. Starting to take trades now would be at least "lower risk"...
In order to be a successful trader:
1) Do a couple thousand trades over a 10 year period,
2) Lose a large amount of money 2 or 3 times and scare the sh_t out of yourself
3)Have a big enough bankroll to comfortably ride out #1, #2