I went through this a little over a year ago.
I worked for XYZ company for 13 years, when I hired on with them back in 2008 I signed a two year non-compete. In 2010 the company sold to a private equity firm, when the private equity form made the purchase it was an asset and lability purchase, meaning the private equity firm now owned the rights to my non-compete (nothing I could do) When I found out that new hires only signed a 1 year non-compete I went to upper management and asked to sign a new non-compete and they let me. My new non-compete was a 1 year instead of a 2 years.
I brought a lot of new business to XYZ company and made them a lot of money. Keep in mind that these where customer that I worked on and sold them on why they should do business with me. No one from XYZ company helped with prospecting or signing all these clients
Fast forward to January 2020 the private equity firm was trying to sell the company, at this point I had enough of the travel and my commission getting cut. traveling more, longer hours and less pay. They could all suck it.
I knew I was going to leave so I got everything lined up way in advance to me giving my resignation. The best thing I did was get with an employment attorney and one that had a strong background in contract law. My attorney went through my non-compete/non-solicitation contract (there is a difference). He walked me through what I could and couldn't do.
One question I asked him, If a client of XYZ company wants to leave and do business with me what needs to happen so I do not get in trouble? His response "you will get a letter of Cease-and-Desist I guarantee it. My next question how do I fight that? His response the client of XYZ needs to write "Mr. Vandal 44 did not solicit our business we perused Mr. Vandal 44. Our company signed up to do business with Mr. Vandal 44 back in (Blank year) and Mr. Vandal 44 has taken care of our account and we want to keep it that. Mr. Vandal 44 did not solicit our business in anyway," (this is paraphrased) but it went on the company letter head
I resigned and went out on my own. I told all my clients what I was doing. I had six clients of XYZ company ask me for a proposal. I told the owners that I would be more than happy too, I told them what needs to be done and if they where not ok with doing that I would understand. All six clients of XYZ wrote a letter.
When I took the six clients from XYZ Company, I received big certified package from the attorneys of XYZ Company. I took the certified package to my attorney along with the letter from the six clients ( there was a little more leg work on my end but not much)
After it was all done I won, the only thing I had to pay was $6,000 to my attorney. For me it was money well spent.
My advice and take it for what its worth. Before you make any crazy decision, spend the money and have a good contract/employment attorney go through your current employment