One of the best moves I made the first 10 years of my career was stepping through every single line of C++ I ever wrote just to observe it working as I thought

One of the best moves I made the first 10 years of my career was stepping through every single line of C++ I ever wrote just to observe it working as I thought (and a lot of times it wasn't). MSVC++/Visual Studio made this a very natural thing to do without breaking the flow. Today, I use a variety of tools and languages and ... hmmm... I don't actually remember the last time I used a debugger on my own code.