How to Judge a dasa will do good or not ?

 There are Natural benefic planets Jupiter , Venus and Moon . Mercury cannot be classified as benefic or malefic . It depends on the association . 

For example one goes through Jupiter dasa . he belongs to Magara lagna . Jupiter comes as 3rd and 12th lord which is not good . But if it is not afflicted and placed in a good position then we can predict dasa is going to be good . But if it is associated with malefics the results will be mixed . 

We need to basically see the lord ownerships of the planet 

1,4,7,10 Lords generally do good

same in the case of trikona lords that is 1,5,9 

6,8,12 lords normally does bad . But again it is subjected to other things too 

ஒருவருக்கு சுக்கிர தசை என்பதற்காக அவருக்கு நல்லதே நடக்கும் என்று சொல்லிவிட முடியாது . சுக்கிரன் கெட்டிருந்தாலோ நீசம் அடைந்து 6,8,12 இல் மறைந்தாலோ  பிரச்னை தான் வரும்