It depends on what's really going on in your marriage. Sometimes if the things aren't that bad, you can learn how to live within what's going on & learn how to get what you need within the relationship.
I had serious financial issues with my H from the beginning....also refusing to communicate & he would lie either by not saying anything or saying things that were only 1/2 way true......only reason I tolerated him for so long was because I had my career to hide away in.....after I lost my career & couldn't get any other engineering position I went into a major depression......& at that point he drove our finances into the ground with all the hospitalizations I had from all the OD's because I couldn't financially get out of the marriage either.....& I hated him by that point (20+ years). I moved into the guest bedroom to start with after first moving out for a few months.
I cut off all physical contact at that point.....13 years of living like that before I was finally able to get out (my mother died.....& being the only child I got all the inheritance).....it's ironic because my mother kept saying what a nice guy he was & pushed me to marry him when I had realized before the wedding that there were serious personality issues I hated even then.
I have to admit, the freedom I finally felt once I left was the most awesome feeling I ever had in my life.....I could finally be who I had lost all those years.....& the bad marriage had pushed me to respond in a very negative way....don't know if I could have learned to respond better.....but I responded with my emotion of anger & it got so bad I was seeing red by the time I finally left.
You might try single marriage counseling to see if there is just a better way for you to respond to what's going on in your marriage & then work through that in helping you know what steps you really need to take.
I was going to therapy for my depression & anxiety & suicide attempts....but we all thought it was only related to my loss of career....never realizing just how seriously the bad marriage was causing my reactions & feeling trapped especially since I had no love for him from even the beginning.
I know how difficult it is.....& hope that you will be able to take the best steps possible to help you handle the situation you find yourself in.