The next problem area is what to do with seeds once we have them. Some folks leave them in the kitchen, some end up in the garage, and yes, many get misplaced or lost. The best place for virtually all your vegetable and flower seeds is in your freezer. Not only do you know where they are, but they are also being stored at a constant temperature and humidity. This stratifies them as well, which helps speed up germination.
Timing is everything with seeds.
There has to be a natural progression from seed germination to planting outside in the garden. Unless you have a perfectly controlled environment in which to keep young seedlings and growth retardants to hold them back, you must time your seeds to correspond with the readiness of your garden outside. In other words, don't start outdoor tomatoes until mid-April. I'm also convinced that you need a cool, well-lit area in which to place your young seedlings during the early stages of growth. Adjustable fluorescent lighting, adjustable heat and circulating fans are also important.