Our perception in life is probably the only free will we really have. Let me explain. We cannot control fate. We can have intentions, and hopes, dreams, etc, but even are hardest action cannot always manifest what we want in life. Even a guy with a Phd can have a hard time finding a job, even a great looking man with lots of cash can have a hard time finding love. Our free will stops at the edge of the next person's.
But to get to the point of confidence: YOU and you alone have the freewill to see yourself how you want. Believe me. There are times I have all the confidence in the world, and then there are moments in my life like right now, where my confidence has been kicked in the balls. But ultimately it is my choice.
There are things you can do to boost your confidence. Some suggest you change your clothes style, you may be suggesting to yourself trips to the gym. But to be fair there are out of shape people with much self confidence, and there are people who dress like total honeysuckle who have a ton of confidence too. And likewise, there are sharp dressers and good looking people with no confidence at all, even if in great health or great physical shape.
So that proves that looks alone mean nothing in the form of confidence. Oh sure, they can help. The action alone of going to the gym, and getting a routine in your life can go a long ways to helping you. It cannot hurt.
But ultimately confidence comes from learning to love yourself, to accept yourself for who you are. And remember. You are NOT the person in the mirror. You are the person looking at the person in the mirror.
Be comfortable with yourself. Love yourself, and never give a honeysuckle what others think of you. They are entitled to their own opinion, and even if you were gorgeous and rich and popular and won a nobel peace prize, if people are going to talk honeysuckle about you, they will find a reason no matter what. Haters and judgers will do just that, hate and judge.
And remember this most of all when it comes to other people's views on you. Tell them this:
"Your judgments do not define me. They only define you as someone who needs to judge."