Consider the source. Where we get our information from is as important as the information itself. Just because it's online or posted on Facebook, doesn't make it true, right or for you.
Who said X,Y, or Z about you and your future must be taken into consideration before giving any weight to what was said. Even our own "self-talk" needs to be evaluated before accepting it as gospel. Speaking of Gospel, we need take every thought - regardless of it's source - and place it next to the Word of God. And if it doesn't agree with God's thoughts (His Word), it must be rejected. God's Word is the final authority.
2 Corinthians 10:5
"We destroy arguments and every lofty opinion raised against the knowledge of God, and take every thought captive to obey Christ,..."