The judgment
蹇：利西南，不利東北；利見大人，貞吉。
Obstruction. The southwest is favorable, the northeast is not. It helps to see a great person; staying true is lucky.
Received text; plain English after the Chinese. Source: 周易經傳 (public-domain). Passage: hex39.judgment.
The image
象曰：山上有水，蹇。君子以反身修德。
Water on the mountain: obstruction. A capable person turns back to themselves and works on character.
Received text; plain English after the Chinese. Source: 周易經傳 (public-domain). Passage: hex39.image.
When the road blocks, the first move is inward.
The six lines
Each line is a stage, from the bottom of the hexagram to the top. Open any line to read it in plain English.
初六 往蹇，來譽。 Going forward brings obstruction; coming back brings praise. Retreat is the praised move here.
Going forward brings obstruction; coming back brings praise. Retreat is the praised move here.
六二 王臣蹇蹇，匪躬之故。 The king's servant meets obstruction upon obstruction, and it is not for himself. Some difficulty is taken on for a larger duty.
The king's servant meets obstruction upon obstruction, and it is not for himself. Some difficulty is taken on for a larger duty.
九三 往蹇來反。 Going forward brings obstruction; turn back. The line repeats the lesson: do not force the road.
Going forward brings obstruction; turn back. The line repeats the lesson: do not force the road.
六四 往蹇來連。 Going forward brings obstruction; coming back brings alliance. Return puts you among people who can help.
Going forward brings obstruction; coming back brings alliance. Return puts you among people who can help.
九五 大蹇朋來。 Great obstruction, and friends come. The worst moment is when help finally arrives.
Great obstruction, and friends come. The worst moment is when help finally arrives.
上六 往蹇來碩，吉；利見大人。 Going forward brings obstruction; coming back brings greatness. Good fortune; it helps to see a great person.
Going forward brings obstruction; coming back brings greatness. Good fortune; it helps to see a great person.