Apart from the solar energy, in a primordial soup of chemicals, lets say a flask full of chemicals, the following factors can shape the fate of the system, or else the natural history of the events:
1) By the different isoforms that organic stereochemistry pose, which adds to the diversity and mechanics that is needed to avoid equillibrium. Organic molecules are more stable. Thus, their number would slowly grow in the mixture....

2)Hydrophobic interactions (hydrophobic bonds, spatial configuration, separation and isolation of chemical systems, membranes, etc.
3)And apart from that, another crucial factor that shapes the system is the property of some molecules to strongly adhere to each other, or to membranes. In fact, if you put living cells and dead cells in a flask, then you can sort them easily because only the living ones will strongly adhere to the walls.
To see the importance of stickiness, take for instance the sponges. Recent studies has shown that they were one of the first organisms on earth, along with corals.
They don’t seem quite like the other animals. In fact, I would say that they are something in between, more like random chemical systems. However, the strong adhesions between molecules (as well as multiple other factors) in sponges makes those systems sustainable over time. In fact, they were created because they were not destroyed. They can sustain themselves for millennia and every sustainable chemical novelty can prevail and be selected.
4)Slow reactions can sustain themselves for a longer time...
There is not a certain plan that is favored, however the system will continue happening. The final resulting reactions will appear to have survival capacities if the observers are exactly those resulting reactions. Everything that happened lead to them. So the final combination of reactions will be the most sustainable of all combinations, given the particular conditions, because that’s exactly what happened. Those reactions prevailed in the long term. So to the eyes of the results, these reactions have some survival capacities. But what is life actually any other apart from sustainable complex chemical systems to our eyes, or else a sum of resulting chemical reactions?
Its something like a sort of evolution and selection of chemical reactions.

In the future i will explain why repeatability may not actually exist in the chemical reactions of life in the way we mean it in mathematics, but what we see as repeatability might be a result of the fact that huge numbers of different chemicals, under the same chemical laws with respect to their interactions, environmental factors, natural forces, tendencies, end up in similar ways. For instance, if they differ in 1 trillion reactions and their whole sum is 100 trillion, then they are 99% the same.

M Sakellakis