This is a very important point to understand, as there are so many strategies in the world to apply in your business, investments and in the markets. You just have to be patient in your search for one that works specifically for you. Some strategies may be excellent, but if it doesn't align with you, then it's of no use to you.
Some things may work for someone else, but may not work for you. This may be because you lack the absolute believe in it. Some times, it's simply because that style doesn't suit your personality. And in life, you really can't force things - it's always better you find a way to flow with things.
In order to find a strategy that works well for you, you may have to study many different strategies. In reality, this is the only way to go about it. You have to rigorously search and study as many strategies in business and investing - when you do this continuously, sooner than later, you'll come across one that you like and works for you.
It's also important to remember, that no strategy is 100% correct all the time. Hence, you have to come to terms with times when you probably wouldn't be making as much wins as other times. The world is by itself uncertain, and there's no strategy that you'll cross your legs and it will give you wins forever.
You have to stick to it, and not waste time jumping around, when you've found a good strategy that works for you. Don't lose confidence perhaps because of few loses in a row. You also have to think about times when you've enjoyed wins in rows. In the end of the day, you're looking for a strategy that will give you much more wins than loses - and you'll be good.