Ask yourself, when was the last time you invested time and money in yourself?

You can do these simple things to invest in yourself. 

1. personal time/vacation

2. slowing down, implement a morning process

3. personal development/learn/read

This is something you have done throughout your life, and it is how you have grown into who you are. So make sure that you continue doing it, because the fulfillment you want in life comes from first investing in yourself.