Roughly 50% of people will disagree with you 50% of the time.
Seeking approval from others all the time will leave you disappointed at least half the time.
Not everyone will approve. You won't agree with everyone. That's OK when you're reasonable.
Expecting the inescapable disapproval means you won't beat yourself up as much, or let the opinions of others drag you down. You might take more chances and go confidently with your gut.
When you've done that in the past, it has served you pretty well.