Sometimes those stupid things I have ever done before are making me feel madly .

此句时态稍微有些不当，sometimes一般都是用于一般现在时。
还有，madly为副词，feel后面跟形容词，故改为mad

故为：
Sometimes those stupid things that I have ever done before makes me feel mad.
有时，我曾经做过的那些愚蠢的事情让我感到疯狂。

Sometimes those stupid things that I have ever done before make me feel mad.
things 是复数，用make

Feel mad不是 madly 还有就是不用进行时用一般现在时就好

同意楼上的
sometimes 用于一般现在时，所以后面making改为 makes， feel+adj.则改为feel mad