Shinjie, I am responding to your question about how long it will take for you to achieve bladder incontinence without philosophical points but rather a medical alert. I am a newly graduated nurse with quality training behind me but little work experience. I want to encourage you to rethink your position on attaining incontinence with the long term use of a catheter. I have no information on how long it will take you to achieve your goal but an educated guess rings in at about 6 to 9 months. Of course within 48 hours bacteria begin to colonize the catheter and move on within 72 hours to the bladder and within a couple of weeks should have fully invaded the entire renal system. Your plan is risky and may bring you intense grief and pain so I really hope you think it through after accessing current research. There are ways to accomplish your goal of incontinence without the self harm element. They do take time but are safe and not debilitating. Take care of yourself, Thera