Operating heavy machinery is read as handling power much greater than your own. Tradition links it to responsibility, control and the systems you are part of.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.