POssible reason that can pull nifty towards earth can be;
- Uncertainity in world / indian economics.
- Geo political situations.
- Most important GST impactful results.
Unless there is no second thing that Nifty has changed it's direction.
personally i am focused on to get higher high, higher low, lower high, till then won't focus on shifting it's direction.
The best thing ever learnt from market go with the flow; so never try to swim against the massive flow.
Best of Luck