If you can look into the seeds of time, And say which grain will grow and which will not, speak then to me, who neither beg nor fear Your favours nor your hate.
When you have some success, the feeling of being an imposter can be real. Who am I fooling? But when you create things that only you — with your unique talents and experience — can do, then you are absolutely not an imposter. You are the ordained. It is your duty to work on things that only you can do.