Hey brit! welcome! people come and go quickly here, though you'd be surprised how often we come back. Transition is overwhelming so do it at your own pace. It is, more and more, something that each person does at their own pace. For example I started hormones just after my 25th birthday and didn't start living full time till i was 28 or so. You have to respect your own inner voice. Your fears are as valid as your hopes.
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When love beckons to you, follow him, Though his ways are hard and steep. And when his wings enfold you yield to him, Though the sword hidden among his pinions may wound you.
Kahlil Gibran