Good question- I think there is a way to frame it, as in
1- know that you are safe and secure, for instance choose a grounding element in your routine or environment, or simply a strong thought or knowing, that reminds you that you are safe and stable no matter what new things you encounter
and 2- know that growth and opening up to new things is a natural process and part of natural flow, so let your mind be open to new things, in a targeted and progressive manner.
That way, your mind has both an anchor, and a forward direction to be open to new things.
also 3- know that whatever reservations you had before may have served you well at that time, but now in this new phase of life, it will serve you better to be more open to new things.
That's good that you can identify that conscoiusly you enjoy the new things, so perhaps your subconscious needs reassurance that everything is okay, and you are secure even as you progress into new territory.
