A proverb meaning that things depend on how you look at them; the same situation can be seen positively or negatively depending on one's perspective.
毎日の通勤も、ものは考えようで運動だと思えば気が楽になる。
Even daily commuting — it depends on how you look at it; if you think of it as exercise, you feel better.
この失敗もものは考えよう、経験として今後に生かせる。
This failure, too, depends on how you look at it — you can use it as experience for the future.
ものは考えようと言うけれど、人によって意見が変わるものだ。
They say 'it depends on how you look at it', but people's opinions do vary.