Withdrawals from junk (processed food, heroin, selfishness...)

[7] Submit yourselves therefore to God. Resist the devil, and he will flee from you. [8] Draw near to God, and he will draw near to you. Cleanse your hands, you sinners, and purify your hearts, you double-minded. [9] Be wretched and mourn and weep. Let your laughter be turned to mourning and your joy to gloom. [10] Humble yourselves before the Lord, and he will exalt you.
(James 4:7-10 ESV)

Submit to one, resist the other.  That is clarifying.

Draw near to God
   Cleanse hands (you sinnners)
   Purify your hearts (you double-minded)

   Be wretched and mourn and weep
   Let you laughter be mourning, joy gloom
Humble yourselves before the Lord

HE WILL EXALT YOU

hands and hearts?  Actions and Attitudes.  Clear enough: don't sin and be double minded, change your actions and thinking.

But, why all the sad stuff?  MT 5:4, blessed are those who mourn.  Luke 6 mourn, weep etc.? 

It is a sickening feeling to turn from a corrupt coping system to get back on a healthy system.  In other words, DON'T EXPECT A WASHING LIGHT TO DESCEND WHEN YOU ARE SORRY.  You can receive grace IMMEDIATELY to reassure you, but the painful withdrawals will take time and, well, will be painful.  But its worth it.

He will exalt you (lift you up from the muck).