3131 is the 3 of expression lit by the 1 of new beginnings, repeated like the first lines of a story being written in real time. You are seeing it because a new chapter is starting, and your own voice is the pen. The 1 manifests, and the 3 gives it color.
Because you have been waiting for permission to begin something that is already yours to start. You are seeing 3131 because the new chapter does not need anyone's approval — say what you want out loud, and start writing it into being.
Where it appears shows you where the new script begins. Near a creative pursuit, the blank page is yours. Near a fresh start, your words are shaping it. The location is the opening line, and you are the author.
When 3131 finds you at the start of something you keep almost beginning, that is the sign. Coincidence does not appear right at the threshold of a new chapter. This does, and it is telling you the pen is already in your hand.
Because the beginnings you spoke into existence actually took shape, while the ones you only thought about stayed imaginary. That is how you know. 3131 is not promising the story will be easy — it is confirming that you are the one writing it, starting now.