No - you're human!
Low self esteem and lack of confidence is probably the biggest underlying cause of the difficulties people experience
The Great British Stiff Upper Lip approach is simply about denial - putting on a false front. Being real with who we are and what we feel takes more courage but is healthier and gives a better quality of relationship with the people around us.
It's not crazy people who go to therapy - its people who want to feel fitter emotionally. Think of it like going to the gym but for the emotions. You don't have to be a complete wreck physically before you go to a gym to exercise - in fact a lot of healthy people go to the gym to feel even fitter. Therapy is like this - a space to work-out on those emotions.
You may be thinking about therapy because life has become intolerable - well maybe it seems that way. The very fact that you are looking at therapy websites could be seen as a positive sign - a belief somewhere deep inside that things can be different. And you'd be right. You might get there on your own or with the help of good friends; when those supports aren't working or available to us the trust and patience of an empathic and understanding therapist can give us the encouragement to make the steps forward in our life.
Perhaps its not that your life is in crisis, but maybe it has lost some of its meaning, or you are lacking the 'zest' you've formally had. Sometimes we need a sounding board to bounce ideas off, sometimes its because we recognise that something in our personality consistently holds us back and now finally its time to hit it for six to move on.
Change is possible. The question is how long do I want to feel like this and is there a way of getting there quicker.