A child that will grow tall, his legs will be slim. 


This simply means that there are prices to be paid for rising up. A price among these is leaving several friends behind, those not in your category. Another is enduring humiliations from street abuses, rumours and gossips mostly from those that would want you down the lane. Once you are very much aware of these and willing to conquer them; you have nothing to worry about. Just grow tall!