One of the hardest things is for partners to let others in the firm take responsibility. The more you give up, the more your firm will grow. Little or no marketing. Firms experiencing minimal internal growth can often trace it to this issue. This is an often overlooked issue.
Monthly performance reports.
If you are not managing by the numbers, you will have serious problems. If you have no plan, someone else will decide for you. Don't wait for someone else to tell you what to do. Some firms are great at developing killer strategies but cannot do anything with them. Planning is good, but it's all in the implementation.