You only choose something you value. You desire what you want and you are motivated to get it.
What if you realised that, what you wanted and valued, couldn’t be achieved?
You would probably find something else to value. Something you desire and believe you can get.
The problem with choosing fear is that we can’t really get it. We can’t become totally angry, depressed, alone, unwanted, victimised or discouraged. When you’re aware that you can’t fully have what you want, your desire for it weakens. Your motivation drops when you know you cannot achieve your goal.
The following quotation from Chapter 30 in A Course in Miracles is from the Rules for Decision section. It tells us we cannot really get a total experience of fear. The situation is that, during the day, you have decided for the ego (fear) and so you are asking fearful questions that reinforce fear itself.
“You have already gotten angry….
…you believe the day you want is one in which you get your answer to your question.
And you will not get it, for it would destroy the day by robbing you of what you really want.
This can be very hard to realize.” T-30.I.7
The day you really want is a “happy day.”
You may experience that your decision for fear can result in a miserable, sad, depressing, unhappy day but you can’t fully get that sort of day.
You can’t really achieve the goal of being completely fearful.
You cannot “get it” because you are a loving identity and the spart of love is always present.
“You are only love” T-6.III.2:3
The problem with choosing fear is simply that you cannot “get it!” You cannot chose it fully and that’s good news.