I have always thought I was not a very creative person, mostly because when I heard the word "creativity", what usually came to my mind were artistic skills like painting, design, arts & crafts... Precisely those things I was quite bad at.
Then over the years I´ve changed that perception, not because I started getting good at painting, design or arts & crafts, I´m still awful at all of them. It´s because I have realized two things:
First, that trying something once or twice and finding you´re not good at it doesn´t mean you´re never going to be good at it, it just means you don´t have enough practice (this seems really obvious when you see it written here, but it´s not always easy to see in the moment, especially when you´re used to getting other things done right the first time round without much effort)
Second, that you can be creative in so many different ways! You just need to find the creative outlet that better suits you personally. Your own way to express what´s inside you.
Your voice.

A couple of years ago I "found my voice" in the most literal sense, upon signing up for my company´s workplace choir and starting weekly practices with Nicola, our choir director. I had always liked music, but never realized before how much I really enjoy singing, it truly lifts my spirit.
Whether I´m good at it or not is another matter entirely; that will only be seen once we can reunite again and put together a performance, although I would say that that´s the least of my worries... The most important thing is how much we enjoy singing (and laughing) together as a group, and if other people also enjoy listening to us, then that´s brilliant, double reward.
Also in my life there are and have been other ways to express my creative side: during my childhood and adolescence it was dancing, when I moved to Ireland it was blogging, and when the gils were younger (and even now that they´re a bit older), you can imagine, being a parent also demands a fair amount of creativity :-)
How do you express your own creative side? Have you found your voice yet?