Each person has this little bubble in their mind, and this is what I like to call the comfort zone. This zone is where the person feels safe, secure, and well comfortable. It's like sitting on the edge of the pool while you watch everybody else swim around you. Learn to dive and take that swim because it will be amazing.
Staying inside your own little bubble is dangerous and it's suffocating. This doesn't allow for growth, change, or any challenge in life. Life is not sitting still, so why should you? There's a whole new world out there waiting that's full of amazing new experiences.
Taking the plunge into the unknown is scary, but it's also exhilarating. Challenge yourself every day by trying something different that you've always wanted to do. This doesn't have to be a huge event that you try each time, but if you start this way then the rest will come easily. Live in the moment and treat each day as a new adventure.
Amazing things happen when you push yourself out of the comfort zone. You will grow as a person. New experiences will shape you as a person. You gain new insight into yourself and can discover who you truly are as a person. You gain knowledge and life experiences. Maybe you screwed up, but you learned from it and have a story to tell.
You will have a new energy. A feeling of exhilaration will race through you like a breath of fresh air. Life becomes exciting and amazing. Each day is a joy, and you never know what is next to come.
It won't be easy, but it will be worth it! You owe it to yourself to be challenged and excited. Living life halfway is no way of living at all. So, take that dive out of the comfort zone, the water's fine.