I agree that people with opposite gender traits get help, cuz I don't think depression and suicide are a good thing. But still, we are perfect in God's image, and that is why we shouldn't change who we are drastically.
The thing is, we are what God intended. Whoever taught you that is a process theologist, thus not a real Christian. We don't need to produce our own Vitamin C because we can easily eat that, which is what God intended, in fact, he planned an endless amount of things before you and me existed.
My view on this topic is that even though you for example have bodily traits as a man even though you're biologically a women, God created you how you are, you are perfect in his image, and thus, you shouldn't change who you are in that manner.