Even the best political advice can do little, however, to remedy the biggest problem confronting Labour - the absence of any palpable mood among centre-ground voters for a change of government.
Shearer has to convince doubters within his ranks that National's diminishing list of allies gives Labour a good chance of governing in some capacity after next year's election - and that he is the person who can maximise Labour's vote even if it still falls a long way short of National's.
To that end, Mold needs to get him to do at least six things. First, Shearer needs to relax. When he tries to sound forthright, he sounds uptight. He sounds like he does not believe what he is saying. He needs to choose the right words and let them make his point.
Second, Shearer should be delivering speeches which reveal exactly what he stands for. The public does not have the foggiest. The public might not turn up to hear him. But the media will.
Third, Shearer needs to relentlessly target the middle ground. That will at times mean taking conservative stances that annoy the Labour left. Too bad. The centre is where many conservative-minded Labour voters now sit.
Fourth, he needs to get his caucus talking about the issues which matter to the average person. Shearer's biggest success has been Labour's promise to build 100,000 affordable houses over 10 years. He needs to ask himself why that has been popular and replicate that across other portfolios.
Fifth, he needs to be more strategic when it comes to picking fights with National. But he needs to pick some fights with the Greens to show who is going to be the boss in any governing relationship.
Sixth, he needs to bang a few party heads together and take control of this year's Labour conference so it becomes a platform for him rather than an embarrassment for the party.
In short, he is still the leader. He still has time to lead. But not much.
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