This is a bit of a rehash of a post I made in another thread but I feel it covers a broad range of reasons why being transgender, and consideration of transition in particular, can seem like the most absolute worst thing imaginable for many of us.
Being transgender is no picnic, there's no doubt about that. Some of that certainly comes from our own confusion but a large part of it is down to society treating us as crud. If, for example, you knew that in coming out and transitioning you would have 100% support and acceptance from your spouse/partner, children, family, social groups, workplace, medical professions, etc...do you think you would feel anywhere near as bad about being trans as you may do now?
It's not hard to see that our poor treatment by others is what makes being trans so much more difficult than it needs to be. Even worse we are prone to turning those wider social attitudes back in on ourselves.
There is nothing wrong with being trans, but there is an awful lot wrong with how we are often treated. I know none of that makes for a difference when your faced with what you may be currently feeling or facing as a result of either being trans or pondering whether to out yourself and/or transition to whatever degree you want to. All I can say is that transition will indeed result in a degree of pain, but if you feel bad trapped inside a gender you are forced to pretend to be, what are your options? And no, harming yourself is not one of those options.
Accepting yourself for who you are is a massive step in the healing process. As a trans person you should have as much right to express your gender as any cis person. Of course that also means dealing with the gender police and the people who, for whatever reason, believe you do not have that right. You don't ever have to transition but accepting yourself as trans gives you the opportunity acknowledge there is nothing wrong with that and to at least decide what to do about it, including dealing with any lack of support and acceptance from others.
You are OK.