Only one question per post please
It's actually very normal, ba<x>sed on my experiences.
I get bored easily too; Its both a blessing and a curse
Well depends on what you mean by something new.Do you feel the need to shop and buy things that are not a necessity?Do you have the money to keep buying new things?If you do not and you do feel the need to buy unnecessary items then it is not normal and you need some help.You have a shopping addiction.
As you grow older you realize you are the one who changes, and everything evolves if you stop to look.
Start the projects you can manage.
I mean your tastes change, you let go of things, you accept others.