I still do sometimes, but it's on a lesser scale. Going through with my transition has, in my eyes, given me the opportunity to deal with every other possible emotional issue I might have. My work in that department has really been helpful, and I've come to terms with a lot of things I didn't even think were going on. Sometimes I consider the possibility that I made up extra problems, because I didn't know how to deal with dysphoria, but honestly, I'm happier now in my life than I ever was.
And I know my transition will be a rough road in and of itself, but I'm starting hormones in less than two weeks, and I owe it to myself to say damn it, it's about time. I owe it to myself to not keep up with the doubts. I've been going to counselling off and on for almost a year now, and I've mostly handled social pressures, like how my family and society will react to my transition... And I've come to the conclusion that if it's what makes me happy, then the people who put me down for it are just mean, and don't deserve my attention. And that's all there is to it.
Sometimes we all need to do a bit of self talk to gain some courage, but that's natural. Follow your heart, and y'know, all those mushy things. Cliches exist because they're true for some people.