I think that what they're getting at is that once the impulse is not met with success it ceases its grip and might lessen to some extent. Not sure I agree with

I think that what they're getting at is that once the impulse is not met with success it ceases its grip and might lessen to some extent. Not sure I agree with it but at the same time it is possible that if the means of committing suicide were more easily available and required less upfront effort a lot wouldn't have the time to hesitate and commit to it