The first step is the hardest one. Once you've chosen to pick a better path then subsequent steps will become easier over time.

Meanwhile, you will need solid local support in addition to the peer support here. Do you have a counselor? Interview a few and select one who seems more able to comprehend your concerns and suggest strategies. Same for a lawyer. Even if there are no kids and few assets, you probably will still need an experienced lawyer. Sadly, form filers and hand holders don't know how to handle high conflict cases where settlements are difficult to achieve. You'll need a proactive lawyer with practical strategies to handle whatever troubles your spouse might cause during a divorce.