Unless you are a supermassive red giant star you can't create a black hole and even if you were a supermassive red giant star you would need to die in order to create it so you wouldn't see your dream come true. As for time travel. You can't do it. Sorry to inform you but you can't go backwards in time. Well now you're asking what about forwards. Well other people would go forward in time faster than you but you wouldn't know it. I'll give an example. You travel really close to the speed of light around the Earth for one year. Just flying around the Earth chilling. You come back on Earth and you realize that your kids are now senior citizens. This is because when YOU travel faster the stationary observer goes through time faster. 63 years in fact for every year you travel close to the speed of light. Sorry.