DEAR ABBY: I’m a soft-spoken person. I work in a medical laboratory, and I am finally speaking up for what I believe in (after years of social anxiety and depression). At the last meeting, when asked by the manager for suggestions to improve the lab workflow, I spoke up. Fast-forward to tonight. When I expressed some excitement about my idea, the site leader, a different manager, shot my idea down, saying, “It’s not going to make a difference.” This isn’t the first time she has made me feel like my ideas are dumb or that I’m not intelligent, and I snapped. I asked her what ideas SHE had, and s…