How to prevent Facebook and Google from showing ads based on your personal information

So you may have or heard about a story when using Facebook and suddently you saw an advertisement about something you’ve just searched or even mentioned with your friends by mouth recently. I am not about to tell you how Facebook knew and showed the correct ad to you, but I will show to the solution to prevent Facebook and Google show more ads like that based on your personal information. It is actually quite simple and won’t take you more than 1 minute!