[[Parts won't surrender their burdens until they feel it's safe to]]. And they won't feel it's safe to if they don't trust [[Self]]. It's not uncommon that [[Parts]] don't trust Self. It is often a new experience for them to connect with your Self. Because of this, they may feel that you haven't been there for them in the past. And they may not trust that you won't abandon them again. This why regular check-ins, especially after unburdening [[Exiles]], is an important part of [[The IFS process]]. Parts may also not trust that you have what it takes to take the lead. In these cases, I think it can help to connect parts with [[Self-essence]]. See: [[Become familiar with Self-essence]]. If you're not sure about why your parts don't trust Self, you can ask them. Then you can address those concerns.