High hopes must be connected to high grounds(reasonable basis),
Eg, if one wants to become rich but doesn't work hard enough and still hopes to become rich,that's an example of placing high hopes on low grounds..coz the chances of winning the lotto jackpot are pretty slim(sadly)
Build a solid ground for your hopes,
Also if one is in "darkness" today,hope needs to be placed on a high ground even just in the future itself and life itself and faith.
life = hope