The speed at which human beings do various things is related to many internal and external aspects. The principal internal aspect is the virtual scale in the mind of an individual, using which the importance of an activity with respect to the life is judged. Based on the nature of this virtual scale, the number of the activities judged by the individuals as important can range from a few to numerous and it forms a virtual queue. When there are a lot of activities in the virtual queue in the mind of an individual, naturally a temptation is created in the mind for increasing the speed at which each activity in the virtual queue has to be completed in accordance with the individual’s judgement. It means that primarily it is the priorities in the life of individuals that govern the overall speed of life. Too many priorities will dangerously accelerate the speed of life. Therefore, for a calm and pleasant life one should be able to set right priorities in life.
Practice it and make it a habit. Then the nature will make it sustainable by triggering necessary genetic engineering!