I have had two meningioma surgeries. One last year in September, and this year in June. Like it is natural, I did cry and felt stressed and anxious. However, my advice to you is to find your strength in someone or something you believe in. I'm a spiritual person. My faith in God kept me strong and with a good positive attitude despite the seriousness of the situation. Positive attitude really helps. There are studies that have shown that. It helps you, help the doctors, and your family.
I have two friends who really got close to me in preparation. Talk to people close to you helps to release your fears. I still have a cloud over me as my tumor could not be removed completely due to location, but I feel that I am stronger than my fears, and with hope and positive energy.
Mayo has a great booklet that talks about spirituality, which is not the same as being religious. Not sure if it is online but it helped me a lot. I got it when I went to Mayo for my first in person appointment. There is also a good book by Jennifer Fernjack, who also went through meningioma surgery. It talks about emotional grit. I will pray for your surgery and recovery to be successful, for you to find your strength.