CHALLENGING COACHING suboptimization 152­5 support 17­21 support/challenge matrix 12, 15, 17­21, 26, 60­65, 71­3, 80, 86, 88­97, 98­101, 106, 120­21, 211 system dancing with 151, 158­9, 165 definition of 152 systems thinking xiv, 9­10, 25, 52, 151­77, 188, 197, 224, 230, 238­9 systems-centered questions 161­4 thinking, short-term xiv transformation 123­4, 144­5 trust 99, 165 trust in the future potential of all 39, 41­2, 183, 184 truth, speaking 39, 48­52, 170, 184, 187, 193­4, 228 truths, self-evident 52 Tucker, Albert W. 232 U unconditional positive regard 30, 40 W