((((safe hug))))) Maybe visualizing something that makes you sad, but might be "safe" to cry over... once you're crying you can shift what you think about. Will cutting onions help? IDK. I do know the feeling. For me I think it was because I was ALSO angry OR glad at the same time I felt I should be crying. Inside I wanted to be sad, but I couldn't do it fully (cry) because of so many other thoughts, imo.