Can you have difficult moments and thoughts during a good trip?
Psychedelics and other trip drugs can make things hit much harder and that emotions (such as fear) come up that you were already subconsciously with. If you’re having a hard time tripping, this doesn’t necessarily mean you’re going to have a bad trip.
It can often help a lot to ensure that you are comfortable, do not receive too many stimuli or change your environment and / or music for a while.
If difficult thoughts or emotions come up, try to let them come to you and possibly talk about them.
It’s all temporary and will pass faster if you don’t fight it.
Remember that the experience always passes. It’s a temporary experience that comes from taking drugs.