The hardest thing about sorrow, self-doubt, anger and depression is how while these very real feelings may well be rooted in rock-solid reasons, they resist or deny reasoning. Sometimes such emotions are best 'suffered' in near silence, letting your spirit cry and whisper with one you trust rather than emoting in ways that cause others pain.
You won't drown in your tears. The fear that you won't be able to stop, or make yourself stop isn't true.
There is a time for anger. Just take care not to impale your soul or wound the heart of another with rage.