Your first, and probably 'biggest', the problem is that you choose a very competitive niche in "self-development", "self-help", "motivation" etc. This is the same space as some pretty big names such as Tony Robbins, Grant Cardone, Gary Vaynerchuk, etc. Even though Grant and Gary could be considered business and financial motivation and advice but when someone searches on those keywords there going to get self-help and motivation too because they are crossover niches.
But you do have a shot to achieve your goal but first is understanding that you're on an uphill path because of the highly competitive niche you're in. So my advice would be to get aggressive and start uploading good content and as much of it as you can do. All optimized with keywords, SEO, titles, descriptions and great thumbnails because in very competitive niches flooding, with equally good content, is your only chance of getting views and subs because there is soo much other good channels and content out there for them to watch, answer the question "Why Do They Need To See My Video's?"