Sorry but you’re not really a mentally strong person if one trip “fucked you up”. Please don’t take that negatively, I just mean that based on your interpretation of the trip, clearly you missed a lot of the introspection that comes with having your mind opened to new and challenging experiences, meaning that you are “mentally strong” only in instances in which you feel comfortable yet apparently break down the moment things don’t turn out the way you expect them.
It’s not the LSD, it’s you. If you were so uncomfortable and unhappy, ask yourself- why? Why was something so uncomfortable for you? Why was a few hours of not being “normal” in a scene that sounds safe, with friends that didn’t mean you harm, so foreign and scary and, as you put it, enough to “fuck you up”?
It sounds to me as if you’ll really benefit from asking yourself those questions and driving deep into what is it within you and your worldview that caused you to feel so uncomfortable. Don’t blame external sources- including the drug. It really is all about you. And that can be really overwhelmingly negative to some people that aren’t used to having their “true” sentiments or fears revealed to them so strongly when they dissociate from their ego, but what I love about LSD is that if you take the moment to take a breath, ask yourself why you feel the way you do, you can learn so much about yourself and your relationship to the world around you. True, sometimes it really is outside of your control. But 99.9% of the time, at least for me, it turns out all I need to change is my view on the topic.
One of the most important lessons I’ve learned while on LSD is that I can’t change what is, but I can change how I react to it. And that life lesson is so invaluable.
Maybe though it is true that guidance from someone that’s been through it before, at least for your first time, really helps since it can be scary to be dissociated from your ego in that manner and most people’s first instinct is to reject and dismiss the experience as bad instead of taking is as a learning and growth opportunity. No person is perfect therefore no trip is completely perfect. But you are your own master and it’s all in your head, so it’s up to you whether it ends up being positive or negative in the end :)