Seeing 415 Everywhere

It may indeed be an important message for you. Unfortunately, personal messages like that aren't calculable with numerology. Consider, though, if it really is important then it's unlikely to come as a riddle.

Numerology can be applied to frequently seeing numbers. Just not any personal message within the seeing.

Because the number 4 and the number 15 are your birth date numbers, they are familiar to you. You're more likely to see and remember seeing familiar numbers, numbers that are associated with your very existence.

As an example, your environment no doubt contains many different numbers. Yet it is the 4 and 15 and combinations that you remember seeing.

What can perpetuate seeing certain numbers and cause them to be seen much more often is wondering if there's a personal meaning associated with the seeing. It sets up a mystery. The mind feels compelled to solve mysteries, especially mysteries that may affect the person's life.

The subconscious tries to put the conscious attention on everything that might help solve it — including the numbers being wondered about. Thus, the numbers are seen more often, which makes the mystery stronger, which causes the numbers to be seen even more often, …

See the article about why people see certain numbers all the time for an explanation of how that works.