Praise the LORD my dear brothers and sisters in CHRIST. We all know the above verse that states those who are true in small things are true in big things and same for unjust. But we don't see the deeper meaning which is the second part that if we are unjust in small thing we will also be unjust in big things too. In our daily life we do small-small sins like a small lie to escape our boss, not helping somebody cause it won't do us any good or lying to kid to escape from his questions. These are the things denoted in the verse by "unjust in the least". So if we do that we will also start doing "unjust in much" cause the word of GOD never changes. So lets ask forgiveness from GOD for the unjust we did in the least and try as much as possible to be faithful in every thing even "in the least".
May GOD bless you accordingly.