Instead of unrelated opposites, weaknesses and strengths are usually two sides of the same coin.
That’s why a partner can seem endearingly spontaneous when you first meet them, then infuriatingly unable to stick to a plan a few years (months?) later!
This video helps you apply it to how you see others.
But by the same token your weakness is also the flipside of your strength.
Think of a couple of your perceived weaknesses. What are the strengths to which they are counterparts?