Ultimately, your business is only worth what someone is willing to pay for it.
Identifying any issues from a potential buyer’s perspective and taking corrective action or having plans to correct those issues will put you in a better position with a potential purchaser. This is especially important if you already know the likely identity of a buyer, or if your pool of potential buyers is small.
Buyers are likely to already be acquisitive, so identifying their investment strategy including their valuation technique can sometimes be possible (using trade news etc). Aligning your business accordingly can increase its value.