It is well knowen that " A journey of a thousand miles begins with a single step". Then let's make that step.
According to you how can the muslim world find again its glorious days ? And we, as muslim, what do we have to do to achieve that ?
For me, there is mainly three points: 1. Following the right path of islam as close as possible. 2. Spreading knowledge, science and technology by reforming the educational system and also by doing intensive investment in R&D. 3. Declare a global war on poverty (perhaps this is the toughest point!!!).