Learning how to do something, anything, in one effective and effortless way is the first step to understanding and deep knowing. Once you’ve attained proficiency you’re ready to move beyond the limitations of “one”.
To really know how to do something is to be able to do it several different ways. After all, you never know when you might encounter a circumstance when the tried and true isn’t quite right. Imagine how much more prepared you will be to face the unknown if your skill is broader than a single option.
Once you’re feeling confident in your ability to successfully complete a task, or execute a skill, begin to muck about with other possibilities. Use the tools you have been exploring and see if you can find at least 3 alternatives that are equally (if not more) effective.
Prepare for real life by practicing not just the “one” way you found that worked but the alternatives as well.