sisyphean task icon. strong man pushing big boulder uphill sign. man uses his strength to push a big rock up the steep hillside

person effort hard problem push silhouette trouble hill man boulder uphill vector stone sisyphus career challenge debt difficult difficulty heavy metaphor power pressure strength strong struggle task businessman work business rock black concept symbol mountain men determination large manager success adversity persistence isolated icon background ball male assurance sisyphean pushing big sign steep hillside logo flat style icon sign symbol logo