wishful thinking

详细解释:如意算盘, 痴心妄想

英语解释：

名词 wishful thinking:

the illusion that what you wish for is actually true

例句：

I think her condition is improving but it may just be wishful thinking on my part.我认为她的情况正在改善，但这也许是我一厢情愿的想法。