The first part of your rest message is a general indication of how much XP you have received since your last rest. We don’t update character sheets with the specific amount of XP that you have, but this can help you determine what is being considered a good challenge for your character.
The message you noted about being dissatisfied that nothing occurred since your last rest indicates that you have received very little or no XP since your last rest. If you’ve engaged in combat against level appropriate enemies that offer a challenge, you may see a message here saying you are satisfied, quite satisfied, or thriving/proud - the wording can change a bit depending on how far you are in the level and if you have a cap, but those are the general terms. When you accumulate XP in combat, it eventually builds toward a cap - which lowers the amount of XP that you receive on a percentage-type basis. A message indicating you should slow down applies a mild penalty, while one stating you have a ‘blind drive’ applies a heavier penalty.
You can also earn XP through role play and may see messages stating that the time since your last rest was somewhat or very learning and eventful. This type of XP does not contribute toward a cap.
The second part of your XP message indicates how far along you are in your level. You may have ‘just attained’ new powers and abilities, be getting more comfortable, be thriving, or be - ‘far along in mastering your skills, soon to be in complete mastery’. While you can’t see the exact statistics here, it gives you a better idea how to role play your character’s achievements and progress toward new abilities.
If you engage in a lot of combat, specifically after being in blind drive - you can push yourself way into a cap. In my experience, it can take 6-8 weeks with no combat to entirely remove a cap in these cases. You can still go on adventures during this period if you’d like - but it’s also a great time to get involved in some of the RP plots around the server! Some people choose to ignore the caps and do whatever activities their character would normally do - while others prefer to play their character being in need of some down time when caps occur. Ultimately you can choose what works best for you and what makes sense for your character!
Hope that helps! :>