Truth is I'll never know all there is to know about you just as you will never know all there is to know about me. Humans are by nature too complicated to be understood fully. So we can choose either to approach our fellow human beings with suspicion or to approach them with an open mind a dash of optimism and a great deal of candour.
First comes thought then organization of that thought into ideas and plans then transformation of those plans into reality. The beginning as you will observe is in your imagination.