Rules are easier to break in private. A partner, whether a fellow trader, a mentor or a trusted friend, adds a small social cost to ignoring them and a second pair of eyes on your records.
It works best when the arrangement is specific. Agree on what is shared, such as your weekly plan-adherence figure, your biggest rule break and the one change you are making, and when. Vague check-ins turn into conversation about the market.
Choose someone who will be honest and who is not invested in your results. A partner who only reassures is no help, and one who gives trade ideas changes the purpose. The review should be about behaviour and process.
Share facts rather than stories. A number from your journal, such as followed the plan on 38 of 50 trades, is harder to soften than a summary from memory.
Privacy and trust matter: share only what you are comfortable sharing, and never account credentials.
Reflect is a private tool for one trader and has no partner feature. A weekly summary from your journal is a good thing to bring to a conversation with someone else.