Inner Wisdom
Wisdom is not external; it is within

You are wasting every minute in which you do not consciously achieve something. Take an inventory of all those years that have passed you by without some achievement of yours.
First start performing to excellence in whatever work you are presently in. Equip yourself with all you need for this. By the time you think, time passes you by.
Do not waste a single minute, postponing something to the next minute. Whatever responsibility you take on, fulfill such that none can compete with your Excellence.
Wisdom is not external; it is within. Only when water is drawn from the well, is the well useful. As you continue turning the axle of knowledge with the rope of questions, you will be able to drink the nectarine water from the never-drying well of wisdom. The well exists, so do the axle and the rope. It is for you to make necessary efforts.
Learn to understand people, learn to evaluate them. Learn to distinguish the good from the bad. If you have decided that you will not be cheated, then none can get the better of you. And this wisdom stems from your upbringing and experiences in the world.