The secret is staying within your comfort zone. I find that with the appropriate bankroll, I am always within my comfort zone. I suspect, if someone is uncomfortable, they have established a bankroll that they really cannot afford to lose. Never include money in a bankroll that you cannot afford to lose.
If you are betting money you cannot afford to lose, money that would alter your lifestyle if lost, then you are gambling in the worst sense of the word. The whole idea of counting for me is to avoid gambling. But some use it to mask their penchant for gambling.
Decide. Do I want to be a gambler or do I want to be an advantage player. To straddle the two is fraught with peril. Then again, if you're a gambler, you might enjoy that. But don't come crying here that you did all the right things and lost a bundle (like I have been known to do). lol
The road of experience to knowledge is a winding, dangerous road, or you can just believe those who have gone before you. Try for the latter. Caution: the roller coaster emotions that you will experience if you bet outside your comfort zone may be dangerous to your health.