Often, we are most hard on ourselves. Here is a wonderful resource that speaks to how we can increase our self-compassion. Check out the guided mediations and exercises.
Brene' Brown is a "vulnerability" researcher and has written many thoughtful, validating books on our experience of not being perfect(it is even a gift..)
The Yerkovich's speak about attachment styles in an accessible, relevant way. Take their "Love Style " quiz to see what your attachment in relationships is like.