You Can'T Yank My Chain

I don't lease space within my head, To allow an opinion to lay and fester; I'll not permit others to cause me dread, Or my deepest thoughts to sequester; I value friendships if their refined, And convey to me no pre-conditions. Don't come to me with change in mind, Daring to take, or change, inhibitions. You'll find I won't be a friend so kind, If inflicting on me any unwanted pain; It won't merit the effort you'll find, For I won't allow you to yank my chain.