Jeremiah 17

The heart is deceitful above all things and beyond cure.  Who can understand it? v.9
Read chapter 17
"Just follow your heart," is a common saying someone says to a person who is trying to make a decision (big or small).  Yet the Lord says here through Jeremiah that the "heart is deceitful above all things."  So why would I want to follow this deceitful thing?  Does it then mean to do the opposite of what my heart is saying?  Well first off the term "follow your heart" isn't in scripture so we don't need to pick apart any truth in that as being God's word.  We all know that our hearts desires change from time to time, many from one minute to the next.  For example, one moment a girl thinks she's met her soul mate, but when things don't pan out after a couple weeks she soon finds someone else she's sure is her soul mate and so the cycle goes on- she was following her heart but was deceived by it.  Think about it, realizing our hearts have sin in them, for if all that was on your heart was put on display in front of everyone how would you feel?  Thankfully the Lord promises to give us new hearts when He says in Ezekiel 36:26, " I will give you a new heart and put a new spirit in you; I will remove from you your heart of stone and give you a heart of flesh."
Until then we ought to test our hearts as they align with God's Word of how we are to make a decision.  This will make us like a rooted tree than a leaf tossed through the wind with our every changing heart.  For the verses just before say, 
But blessed is the one who trusts in the Lord,
    whose confidence is in him.
8 They will be like a tree planted by the water
    that sends out its roots by the stream.
It does not fear when heat comes;
    its leaves are always green.
It has no worries in a year of drought
    and never fails to bear fruit. vv.7-8
The heart worries but the truth is a firm foundation.  How have you been deceived by your own heart in the past?  How can you this week ground your roots deeper in God's truth?