1.It includes sitting in the company of the pious,
2.it includes dzikr and fikr,
3.it includes brotherhood for the pleasure of Allah,
4.it includes taking lessons from enemies and also taking account of oneself.
The tablighi jama'at is a conglomeration of the four and by good chancethey all happen to be found in the tablighi jama'at.
For an average person there can be no way better than this for attaining self-reformation.
Hazrat Maulana Qari Muhammad Tayyib r.alayhi
Qari Tayyab Sb R.A. Founder President of All India Muslim Personal Law Board and former Vice chancellor of Darul Uloom Deoband has derscribed in this book the Reformative aspect of Tabligh. To download this book click here.http://islamicbookslibrary.wordpress.com/category/tableegh/page/2/