This statement is FALSE.
One of the golden rules of goal-setting is setting SMART goals. SMART stands for specific, measurable, attainable, relevant and time bound. "Attainable" means setting goals that can actually be achieved, that is to say setting goals that are realistic. If a person sets a goal that is too difficult to achieve, he/she may never achieve it and; therefore, he/she will lose his/her confidence. In that way, it is necessary to set a goal that is attainable and, at the same time, to have the sufficient resources to achieve it.