Of course not, otherwise the casinos would be bankrupt. There are tactics that increase the chances of winning. But you will never find one that promises you secure profits. Probabilities can be calculated, but there is no guarantee, because the coincidence has the last word. You can believe in it and that's good. Who familiarizes on his skills, is known to be mountains. But even there is a lot of exercise needed. Because the doubt is usually larger in the end. Practice yourself in mindfulness and play blackjack daily in demo mode, then you will gradually become better.