This is an extremely important question. Choosing a good accountability partner helps you successfully stay away from porn. Consider these things when choosing the right person, they need to be:
A supportive accountability partner cares about you and genuinely wants you to succeed. You need someone who is not judgemental, and understands that no one is perfect. It’s helpful if they have similar values or have been through a similar experience.
You need an accountability partner you can trust, so you can be honest with them. You’ll rely on them to keep your confidence. Reliability is important! Your accountability partner should look at your reports in a timely manner. Also, you’ll depend on them to call you out when needed, because your success is important to them. They will check up on you and ask how you are doing.
When you find someone who has these qualities, even when you stumble, you will “fail forward” and grow. You will have the support you need to succeed.