It's unclear which Solomon you are referring to, as there are likely multiple people with that name. However, in general, research has shown that individuals who accept and acknowledge their depression, rather than trying to deny or suppress it, tend to have better outcomes in terms of recovery and resilience.
One study, published in the Journal of Consulting and Clinical Psychology, found that individuals who accepted their depression as part of their experience, rather than fighting against it, had lower levels of depression, anxiety, and stress over a six-month period. The authors suggest that acceptance of depression may help individuals to reduce the negative impact of their symptoms, and to focus on behaviors and activities that promote well-being.
Other research has similarly found that acceptance of depression is associated with better outcomes, including greater self-compassion, higher levels of functioning, and greater life satisfaction.
So, while it's important to note that there is no one-size-fits-all approach to treating depression, acceptance can be a helpful component of a larger treatment plan, and may contribute to greater resilience and well-being over time.