Draw a speedboat onto a flip chart paper. Give it a strong motor as well as a heavy anchor. Team members silently write on sticky notes what propelled the team forward and what kept it in place. One idea per note. Post the stickies motor and anchor respectively. Read out each one and discuss how you can increase 'motors' and cut 'anchors'.
Variation: Some people add an iceberg in the back of the image. The iceberg represents obstacles they already see coming.
Find the source of problems whose origins are hard to pinpoint and lead to endless discussion Source:
Write the problem you want to explore on a sticky note and put it in the middle of a whiteboard. Find out why that is a problem by repeatedly asking 'So what?'. Find out the root causes by repeatedly asking 'Why (does this happen)?' Document your findings by writing more stickies and showing causal relations with arrows. Each sticky can have more than one reason and more than one consequence Vicious circles are usually good starting points for actions. If you can break their bad influence, you can gain a lot.
Let team members appreciate each other and end positively Source:
Agile Retrospectives who took it from 'The Satir Model: Family Therapy and Beyond'
Start by giving a sincere appreciation of one of the participants. It can be anything they contributed: help to the team or you, a solved problem, ...Then invite others and wait for someone to work up the nerve. Close, when no one has talked for a minute.