Me article encourages mak ing use of the scienti&c k nowledge from developmental psycholog y. It replies to the thesis that coaching needs areliable theor y based on scientific research for achiev ing higher professionalism. A s there is such athing as coaching psycholog y, its scientific basis can easily be adult developmental psychology. It is based on the concept of the human life track. Me end of development is not (as it cannot be) childhood or adolescence. According to the human life track concept humans also develop throughout their adult life. Mere are indicatorsof this development, conditions for supporting it and even developmental task per-formance, which lets one achieve wellbeing, or even personal and professional happiness.