Make Heavy Going Of Meaning

(idiomatic) to make heavy weather of

Example: 2013, Daniel Taylor, Steven Gerrard goal against Poland ensures England will go to World Cup (in The Guardian, 15 October 2013)[1]
  England have made heavy going of Group H but they have handled the pressures of their last two games admirably and playing at their own stadium no longer appears to fill with them with apprehension.