Does a weak moment make a weak character? (Updated)

Just like real people, the strongest of characters have weak moments. Why should the reader see this contrast? As a writer, how do you demonstrate it?

First of all, the best characters are often complicated and full of contradictions. This gives them many layers and makes them seem more 3-dimensional and therefore, realistic. After all, most of us are also complicated and full of contradictions. This helps to make characters relatable to the reader. We like seeing that we aren't the only ones who are a bit messed up. Also, witnessing a strong, larger-than-life character falling apart makes them much more humble. We like that. 

A perfect example would be Jolene Silva, who is my current series. Jolene is strong, confident, powerful, and someone I would describe as a femme fatale. However, at one point in this series, the Colombian bombshell reveals a weak side to her personality that no one saw coming. She makes a series of bad decisions that places her in a dangerous position with Jorge Hernandez and his crew. After a long, difficult road, she finally is trusted by la familia again and comes back stronger than ever. 

I love this because it shows how the strongest characters can fall apart but can bounce back under some of the worst circumstances that life puts them in. There's something very reassuring and comforting about that fact. 

Never assume a weak moment makes a weak character. In fact, it actually makes them more human.