In a nutshell, our beliefs and thoughts shape our lives, and self-love is the key to all self-healing. We can turn things around or create positive outcomes in any area we want with the right mental work.
The fundamental belief that "I'm not good enough" and a lack of self-love are at the root of most of our issues or problems. For example, the underlying belief of financial disaster is frequently "I'm not worthy of having money," the underlying belief of having no friends is frequently "nobody loves me," and the tendency to always try to please others often stems from the belief "I never get my way." Several exercises, such as changing "I should" to "I could" to recognise we have a choice, identifying underlying issues beneath the visible problems, and identifying where some of our limiting beliefs come from, are recommended.
We are essentially dealing with thought patterns. When we recognise this, we realise we have the ability to initiate change right now, in this very moment. Because everything begins in the mind, we have complete and total control over the outcomes in our lives.