。
Try to see things as they really are.
Literal
Things [object-を] as-they-are see do.
有るがままに is a variant spelling of あるがままに using the kanji 有る. よしなさい is an unusual form — likely a typo or dialectal variant of よくしなさい (or just なさい). The instruction tells the listener to see things 'in their as-is state' — a counsel of acceptance.