Dream about falling into cactus is a message for your coldness toward a person or vice versa. Your anger is out of control. Perhaps you need to cut-back on spending, smoking, eating, gambling or some other habit. This is a warning for a split between your rational thinking and your emotional thinking. You are not thinking through what you are doing.
Falling into cactus dream unfortunately draws attention to problems and issues that you have ignored or avoided for too long. You are celebrating an end to your old ways and welcoming in a new beginning. You are releasing all those pent up emotions and negative feelings. This dream is unfortunately the challenges in your life and the difficult decisions you are confronted with. If you wait too long, then the opportunity may escape.
If you dreamt about falling into cactus:
Don’t let another person’s small, thoughtless comment ruin your entire day. People may be a bit stingy with everything from money to emotions to time spent with loved ones. The more you tell someone else that they’re wrong, the more that person is going to reject your advice. In general, this is a good time to simply stay out of other people’s way.