If you’re always working with the same five to ten techniques because they work well for you, then you aren’t getting better. Learning alternative techniques will help your game continue to evolve. It will make you better prepared to face people of all skill levels. In order to do this you have to be ready to fail. Strengthening your weak areas of jiu jitsu will involve being tapped by many opponents, but the end result will be you adding an effective new skill to your repertoire.