Method comprising the steps of: providing a system in an earth moving machine, the system comprising: a plurality of wear elements adapted for coupling with a blade of digging implements of an earth moving machine; and one or more sensors for measuring forces, each sensor of the one or more sensors being arranged in one wear element of the plurality of wear elements or between two wear elements of the plurality of wear elements; measuring strains or unitary deformations with the one or more sensors; processing the measurements of the one or more sensors with central control means so as to calculate forces based on the measurements; and characterized by determining (440a-440c), the central control means, an action to be performed based on the calculated forces so that: when the calculated forces exceed a predetermined excessive force threshold, the action is at least one of: emitting a warning in the form of at least one perceptible signal, and reducing a breakout force of the machine in an automatic manner; and when the calculated forces are less than a predetermined optimal force threshold, the action is at least one of: emitting a warning in the form of at least one perceptible signal, and increasing the breakout force in an automatic manner. providing a system in an earth moving machine, the system comprising: a plurality of wear elements adapted for coupling with a blade of digging implements of an earth moving machine; and one or more sensors for measuring forces, each sensor of the one or more sensors being arranged in one wear element of the plurality of wear elements or between two wear elements of the plurality of wear elements; a plurality of wear elements adapted for coupling with a blade of digging implements of an earth moving machine; and one or more sensors for measuring forces, each sensor of the one or more sensors being arranged in one wear element of the plurality of wear elements or between two wear elements of the plurality of wear elements; measuring strains or unitary deformations with the one or more sensors; processing the measurements of the one or more sensors with central control means so as to calculate forces based on the measurements; and characterized by determining (440a-440c), the central control means, an action to be performed based on the calculated forces so that: when the calculated forces exceed a predetermined excessive force threshold, the action is at least one of: emitting a warning in the form of at least one perceptible signal, and reducing a breakout force of the machine in an automatic manner; and when the calculated forces are less than a predetermined optimal force threshold, the action is at least one of: emitting a warning in the form of at least one perceptible signal, and increasing the breakout force in an automatic manner. when the calculated forces exceed a predetermined excessive force threshold, the action is at least one of: emitting a warning in the form of at least one perceptible signal, and reducing a breakout force of the machine in an automatic manner; and when the calculated forces are less than a predetermined optimal force threshold, the action is at least one of: emitting a warning in the form of at least one perceptible signal, and increasing the breakout force in an automatic manner.