1. All Somali territories (Somalia, Somaliland, French Somaliland, NFD province of Kenya and the Somali Galbeed) are united as a single country from the get go. Important because their neighbours were abusing their Somali citizens which inflamed Somali nationalism.
2. Make the union between Somalia and Somaliland be more equitable so that its less a hostile takeover and more a union. It'll cut down on corruption as well and strengthen institutions.
3. Somalia was mauling Ethiopia in the Ogaden war so make the Soviets stay out and they'll win the war or let any other dictator then Siad Barre hold power during the war and they'll win. Getting the Ogaden region will be a boon for Somali nationalism and it'll let them take control of of the mouths of the Juba and Shabelle rivers. Plus it cuts down on the long ugly border they have with Ethiopia.
4. They avoid war with neighbours and focus solely on the economy first and the army second. They held one of the largest mechanized armies in Africa so putting less focus on it and more on the economy and general infrastructue would go a long way.
5. No coups by the army and their parliamentary democracy continues on which doesn't frighten Djibouti when they finally gain independence, thus they join the union as well.
6. Staying peaceful and drilling oil to supply governmental revenues and firmly staying pro-Western to have the United States help in destabilizing Ethiopia when they turn communist.