Letting go can't just be releasing the old; that which dissapears, changes, passes by. It's also receiving the new. After all, letting go implies movement. If things around you didn't move, letting go wouldn't be relevant. With continuous movement, the space created by things flowing away can only be filled with something new as a matter of course.
Can we, then, turn this around and make receiving the key to letting go? Can letting go be: embracing the new, in stead of releasing the old? In this flow, dissapearing and appearing can't exist without the other, but maybe this shift of perspective can make it inviting in stead of frightening.
Could letting go be: taking a deep breath, rooting firmly, lifting your chin, opening your eyes, spreading your arms wide - wide! wide! - and... receiving?