Rahu is a very mysterious planet,it always gives negative effects,it stays for 18months in a rashi,currently rahu is transiting cancer sign .

To mitigate rahu effect ,here are some remedies:

1. When u eat food face east and eat food
2. Always eat two tulsi leaves in the morning.
3. Wear a tusli mala in ur neck.
4. Recite ohm rang rahuve namoh 108times in the evening after sunset for career related problems on every saturday for five saturdays.
5. Take any bird with cage and release it on saturday from cage,u will get good career prospects.
6. Daily put white chandan teeka on forehead and nevel point daily.
7. Give plain water to sun in a copper vessel daily.

Vastu shastra says  that obstacles such as straight road,atree,an angle ,pillar,awell or any source of water in front of the main door,is inauspicious.

But if the obstacle is situated which is twice the height of the  main door then there is no obstacle.

The obstacles apply to all buildings,residential,commercial,educational.

Feng shui also considers obstacles a major negativeThe concept of poison arrows is very important.poison arrows aresaid to be emitted by anything sharp or angularthat pioints to wardsthe main door.Thesimplest msthld to rectify is mirror.These mirrors are sometimes displayed openly.I am reminded of amanwho stays ingreater kailash,who stays in  southfaci nghouse,there is a tl tree in front of the south west main gate

A simplest method is to sshift the south westmain gate to south east gateit will remove all negativity.