There is a difference between feeling gratitude and appreciation for
something, and feeling attachment to something. Appreciation and
gratitude are states of pure love, while attachment contains fear - fear
of losing or not having what you are attached to. When it comes to
something you want in your life, appreciation and gratitude attracts,
and attachment pushes away. If you are feeling afraid that you will not
get what you want, or losing what you have, then you have attachment.
To remove the attachment, keep shifting yourself into a state of
appreciation and gratitude, until you can feel that the fear has gone.
May you fly in your life.