Is life all about practises ?
Generalizations are dangerous, but i'd still say that buddhism deals primarily with reducing defilements/refraining from behaviors that are not beneficial. At the same time, the noble eightfold path also encompasses attaining new habits.
A summary would go something like this:
- Guard (the risk of unbeneficial habits, not yet established)
- Abandon (unbeneficial habits already established)
- Develop (beneficial habits, not yet established)
- Maintain (beneficial habits, already established)
https://suttacentral.net/an4.14/en/bodhi
Will most of our future depends on our current practises ?
For a layperson, all actions bear consequences for the future.
"I am the owner of my kamma, the heir of my kamma; I have kamma as my origin, kamma as my relative, kamma as my resort; I will be the heir of whatever kamma, good or bad, that I do"
https://suttacentral.net/an5.57/en/bodhi