Following the laws of physics, there is no doubt that every action has a reaction and that the reaction will be proportional to the force. Human beings are endowed with many forms that endorse the above and when faced with a stumbling block they do not give up but persist until they overcome it. As it is logical to think it, not everything is a constant and infinite movement but it has its pauses and periods to rest, recharge strength and if necessary recycled. 
RE: Action and Reaction: Concepts that Build Worlds