Haven't seen a decent tab out there so I'm going to do my best.

For the intro, the second and fourth sections are the actual tab while the  first and
second sections are chord shapes to help you better figure out what exactly is going on.

In all the different recordings and performances I've seen, he adds different
embellishments here and there so I did my best to give you the chords and left it to you 
to figure
out the rhythm and little things he sometimes adds. I recommend watching videos of him 
on YouTube to better learn this.

Also, the bridge is basically that one chord and then playing the intro. Again, I would
listen and watch YouTube videos to figure it out.

Leave corrections in the comments and enjoy.

Be Honest - Jason Mraz

Tuning: Drop D (DADGBE)
No ♪ Capo

^: hammer-on/pull-of
/: slide
x: slap

Intro:

----------5----------8---11---14--------7-------9-------10------------------------------|
----------7----------7---10---13--------8-------10------11------------------------------|
----------6----------8---11---14--------7-------9-------10------------------------------|
----------7----------7---10---13--------9-------11------12------------------------------|
----------5-----------------------------7-------9-------10------------------------------|
----chord-shape-------------------------------------------------------------------------|

[ Tab from:  /j/jason_mraz/be_honest_tab_ver_3.html ]
e-------5--5^7--5-----8---11---14--------7---7---9----9/10----10---x-------10-----10--|
B-------7--7----7-----7---10---13--------8---8---10---10/11---11---x-------11^13--11--|
G-------6--6----6-----8---11---14--------7---7---9----9/10----10---x-------10-----10--|
D-------------------7-----10---13----------------------------------x------------------|
A----5-------------------------------3/7-----7---9----9/10---------x---10-------------|
D------------------------------------------------------------------x------------------|

----7--------5-------7---------------------------7------------------------------------|
----7--------7-------7---------------------------8--------------------------7---------|
----7--------6-------8---------------------------7--------------------------6---------|
----7--------7-------7---------------------------9--------------------------5---------|
----5--------5-------9---------------------------7------------------------------------|
---chord-shape-------7------------------------------------------------------7---------|


e-----7---5------------7--x------7------x------7--x------7-----7----------------------|
B-----7---7---7----7------x--------10---x------8--x------8^10--8-------7----7-----7---|
G-----7---6---6----8------x-------------x------7--x------7-----7-------6----6-----6---|
D-------------7----7------x-------------x---------x--------------------5----5-----5---|
A--5----------------------x-------------x---7-----x---7-------------------------------|
D------------------7------x---7---------x---------x------------------7----7----7------|



Verse:
----7----7---------2----2----0----2---------2----2----0----7---------|
----7----7----5----2----3----0----3----5----2----3----0----8----7----|
----7----7----4----3----4----1----4----4----3----4----1----7----6----|
----7----7----5----2----4----0----4----5----2----4----0----9----5----|
----9----9----4----4----2----2----2----4----4----2----2----7---------|
---------9---------4---------2--------------4---------2---------7----|

Post-verse:
----7---7----7----7----7---7---------|
----7---7^8--7----7----8---7----7----|
----7---7----7----7----7---7----6----|
----7---7----7----7----9---9----5----|
----9---9----9----9----7---7---------|
------------------9-------------7----|


Bridge:
----3----|
----3----|
----3----| + intro
----3----|
----5----|
----5----|