Dealing with shrewd and crooked people...

• Do not trust these people
• Apply diplomatic policies to such type of people
• Keep records of their faults, mistakes and decisions in written form/emails etc. for defending the self in untoward situations that might arise
• Give them straight reply when they tell lies and try to mislead people
• Keep your own records properly for times of official need in any future times
• Apply management diplomacy & politics(MDP)  in all situations so that situations do not worsen further
• Take stock of the real circumstances
• Mind the ground realities
• Be simple, humble and 'down to earth' in solving tricky problems 
• Be straight-forward to the shrewd and the crooked to reduce complexity
• Handle such people with tact, diplomacy and politics(TDP) so that they do not cross their limits
• Publicize the lies and false statements of such people
• Remain closely connected with good people around you for right guidance
• Take opinions from competent and dependable people, but take your own decisions with determination and guts
• Be bold and courageous, as these qualities have no costs or price
• Be your own boss
• Be the change
• Change your thoughts and attitudes for bettering yourself every day...
• Manage time well
• Connect with right kind of people
• Enrich yourself with powerful thoughts
• Powerful thinking will lead to powerful actions
• Powerful actions will fetch greater success
• Plan your day well
• Ensure 100% execution of your plans to be happy and satisfied at the end of the day