Anyone with experiences in significant anxiety (and other negative emotions reduction) due to meditation?

I am 31 y.o, have been extremely neurotic my entire life - highly anxious, prone to anger (although it's internalized), sadness and extreme self consciousness (a sense of shame and humiliation). I'd like to achieve a level of emotional stability that most special forces officers could only dream of, basically going from top 5% most neurotic individuals to the bottom 3-5% least neurotic. I also want my pain tolerance to be drastically higher, signifiantly higher than the average in the population. Traditional methods (SSRI, talk therapy) could technically offer some improvement but it would be mild to moderate. not drastic, and not even guaranteed.

I don't have to work, Ilive from disability benefits (majority of which I save, possessing very generous savings) and I have essentially unlimited amount of free time.