To start a parcel business at the end of the year, begin by conducting market research to identify popular products and trends during the holiday season. Develop a solid business plan and determine your target audience, pricing strategies, and marketing techniques. Establish partnerships with local suppliers, logistics companies, and delivery service providers to ensure reliable and timely delivery of parcels. Promote your business through various channels such as social media, online advertisements, and collaborating with influencers to reach a wider audience and attract customers.