Focus On One Area Or Multiple?

Sometimes I think that it is better to focus on one area instead of multiple. For example: I’m focusing on my business- growing it and feeling better. However I know I need to address buffering and money. Applying the focus both in my studies in scholars and in my daily mental energy. However is the buffering and drinking/money problems keeping me from my business growing? It all feels linked and I’m having trouble staying on one path- or is that even important?