Properly growing spiritually

[Nightside Eclipse]

Earth is quite the messy place, and theres many ways to do good and bad.

How would one grow spiritually? It seems quite ambiguous. Each day I try to do something good, or help someone-- but is this growing spiritually? Is there any other ways?

Conditional love?
Using less stuff?
...etc


I'm trying to grow myself better. Best to start (or continue) now I guess... it would be better than wasting a life-time doing nothing (or close to) important , when one could be utilizing his/her time effectively!
Also, if one of you will say 'love', can you define it more? Is it unconditional love? etc