How to Use "guru" with Example Sentences

1. He is considered something of a guru on investing .
2. He was a successful internet guru , so who am I to argue ?
3. Tom peters , the management guru , has been on to this for some time .
4. The turn came recently when management guru tom peters tweeted enthusiastically about a book that extols negative thinking .
5. You dont have to be a productivity guru or sell your television.just get up off the couch and do something .