Regarding your original question about how you can overcome obstacles, develop healthy routine sleep habits, increase your academic performance, and reduce your anxiety, it is important to find ways to identify, learn about and understand your own neuropsychological and developmental particulars.
In other words, every 2e person presents differently. One person may be gifted in executive function and languages, and challenged in fine motor skills and sensory processing, while another person may be gifted at music and coordination, but challenged in executive function and social skills. Each of these people needs very different strategies and supports to help them maximize their neural plasticity opportunities (developmental windows) to build neural pathways that help them adapt in ways that build on giftedness to compensate, recover from, or work around challenges or differences in neurological wiring. It is just as important to avoid maladaptation caused by sensitivities as it is to find supports and strategies to achieve success. Both are important. You need to identify and then learn about your own specific and unique matrix of gifts and challenges, and then use your gifts to strategize how to effectively deal with your challenges.
Learning about some other 2e person would be misleading, and not helpful or effective. Academic test scores are not an effective way to identify your particulars, either.
It is important to note that the advent of technologies like MRI and CT scans have allowed us to see into the living brain for the first time in history, and many professionals who are working in the field right now were educated and trained before the advent of these technologies. Older professionals have experience, and younger professionals have up-to-date education and training. You need both. A team approach involving an experienced psychologist, occupational therapist, education specialist, OR developmental pediatrician AND a neuropsychologist (which is a relatively new field.)
If you do not have the money or access to a team of professionals who can provide accurate and specific diagnoses in both your gifted and challenge areas, which ring true to you, there are lots of books and other resources that can provide you with plenty of autodidactic self-assessment and self-help opportunities. Two podcasts that provide a huge list of resources are Tilt Parenting Podcast and Parent Footprint Podcast. Both have websites as well. They’re meant for parents, but they work just as well for self assessment. Start by targeting the episode titles that sound like a good fit for your gifts and challenges, and then listen to the ones that do not sound like they’re about your gifts and challenges. You are likely to be surprised and illuminated about things you didn’t think applied to you, as well as things that you already knew did.
Since you mention existential anxiety, you may also want to look into the work of Peter Levine. He has several books that may speak to you, but I found the video of his lecture on ‘spirituality, archetypes and trauma’ particularly good for understanding a complicated neurological subject (somatic processing and regulation) in under two hours. Just search those words in any search engine, and the video will pop up. It’s the one which is 1 hour 56 minutes and 8 seconds long. Learning how to regulate your somatic processing system is the key to gaining control over anxiety (or recovering from PTSD.) Meditation works without you needing to know why, but this lecture will tell you WHY meditation works. Understanding the whys brings many 2e people a lot of comfort all by itself, regarding almost anything.
Best wishes on your journey of self-discovery. I know it is very discouraging and frustrating sometimes, but the gifts are well worth the challenges, and if our world has any hope of recovery it’s through the skills, creative drive, intuition, and mental acuity of 2e people. Your job is just you. I’m not religious or in AA, myself, but the Serenity Prayer is pretty much just a lesson in common sense, and really hearing what it is saying can help a lot. I use it all the time. Basically it says, “do what you can, and let go of what you can’t.” Easy to say, and hard to do. Hang in there. You’re not alone.