Initially I started train from Nizamuddin sir but as you know metro connectivity to NIZ is poor.North Delhi Passengers have to face problems.They have to interchange line and only 2 direct bus are available 19 and 181.So Changed my thought and Started it from NDLS which is just beside gate-1 of New Delhi(yellow line)metro and later i started it from DEE.
I guess you could understand what I'm saying as you are also from Delhi