Another important note to myself

Always make sure to check your answers. If you tend to feel too lazy about it and usually skip it, know that you refusing to use a particular part of your brain (as a matter of fact, this particular part resides in the right hemisphere - responsible for making sense of the bigger picture). A tendency to not use specific parts of your brain can lead to sloppy work. You should use all parts of your brain.

"The first principle is you must not fool yourself, and you are the easiest person to fool". - Richard Feynman