Last week I visited the grave of Servant of God Vincent Capodanno, the Grunt Padre, who was a marine chaplain and also worked with people at risk of suicide. That afternoon I visited Servant of God Dorothy Day, a survivor of two suicide attempts.
There is nothing to be ashamed of. You're not a bad Catholic if you have PTSD (like St. Alphonsa Muttathupadathu) or OCD (like St. Oscar Romero).