Every time that a good opportunity knocks on my door (job interview, potential relationships/friends) I get so anxious that I end up screwing up everything! Last week I had a job interview for my dream job and I became so anxious that I failed all the tests. Even though they were totally doable and I knew that I have good chances to get the job. And I always act like this. When something is too good to be true, I subconsciously sabotage myself into miserably failing. And then I get so disappointed that I despise myself for being so emotional and not being able to manage my anxiety. Any good advice?