Affiliate Marketing Secrets

Let me elaborate:
I’m 30 years old. I’m an Inventory Control Coordinator for a large 3rd Party Logistics company that is the main distributor for a big box store in Canada. I never graduated from high school. Almost everyone I’ve met in my profession thinks I’m smart, but very few of them know that I never finished secondary school.
One of my mentors keeps telling me to go back to school and get a degree in something, but I have absolutely no interest in learning anything new right now. I’d spend hours a day for a week searching and browsing courses and degree programs online that are offered at local colleges and universities, but nothing peaks my interest.
And to top it all off, I don’t even have much of a desire to continue working in the field where I have created a niche for myself. I’ve been doing this for almost 15 years now. With no direction. No goals. But enormous potential – as others often remind me of.
This notion has led to many drug and alcohol related issues that I have dealt with and now, no longer have a problem with. But the void is still there. With no desire to achieve anything specific. Nothing interests me enough to pursue a degree for.
What should I do?